/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/bitvector/soft_float_2a.c.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-22 01:32:24,777 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-22 01:32:24,780 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-22 01:32:24,830 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-02-22 01:32:24,878 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-22 01:32:24,882 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-22 01:32:24,887 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-22 01:32:24,894 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-22 01:32:24,895 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-22 01:32:24,896 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-22 01:32:24,900 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-22 01:32:24,903 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-22 01:32:24,906 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-22 01:32:24,910 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-22 01:32:24,919 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-22 01:32:24,921 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-22 01:32:24,932 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-22 01:32:24,947 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-22 01:32:24,948 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-22 01:32:24,949 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-22 01:32:24,952 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationWernerOverapprox_32.epf [2021-02-22 01:32:24,976 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-22 01:32:24,977 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-22 01:32:24,981 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-22 01:32:24,982 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-22 01:32:24,982 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-22 01:32:24,982 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-22 01:32:24,982 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-22 01:32:24,983 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-22 01:32:24,983 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-22 01:32:24,983 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-22 01:32:24,985 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-22 01:32:24,985 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-22 01:32:24,985 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-22 01:32:24,985 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-22 01:32:24,986 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-22 01:32:24,986 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-22 01:32:24,986 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-22 01:32:24,987 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-22 01:32:24,987 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-22 01:32:24,987 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-22 01:32:24,987 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-22 01:32:24,988 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-22 01:32:24,988 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=WERNER_OVERAPPROX [2021-02-22 01:32:24,988 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-22 01:32:25,399 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-22 01:32:25,430 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-22 01:32:25,433 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-22 01:32:25,434 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-22 01:32:25,435 INFO L275 PluginConnector]: CDTParser initialized [2021-02-22 01:32:25,436 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/bitvector/soft_float_2a.c.cil.c [2021-02-22 01:32:25,532 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/59b1ab211/41a709235ec84ffdbf7664d3fcf01e52/FLAG97da29bab [2021-02-22 01:32:26,138 INFO L306 CDTParser]: Found 1 translation units. [2021-02-22 01:32:26,139 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/bitvector/soft_float_2a.c.cil.c [2021-02-22 01:32:26,153 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/59b1ab211/41a709235ec84ffdbf7664d3fcf01e52/FLAG97da29bab [2021-02-22 01:32:26,513 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/59b1ab211/41a709235ec84ffdbf7664d3fcf01e52 [2021-02-22 01:32:26,519 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-22 01:32:26,530 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-22 01:32:26,534 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-22 01:32:26,534 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-22 01:32:26,539 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-22 01:32:26,540 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.02 01:32:26" (1/1) ... [2021-02-22 01:32:26,541 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22f1613b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:32:26, skipping insertion in model container [2021-02-22 01:32:26,542 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.02 01:32:26" (1/1) ... [2021-02-22 01:32:26,550 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-22 01:32:26,602 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-22 01:32:26,756 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/bitvector/soft_float_2a.c.cil.c[423,436] [2021-02-22 01:32:26,806 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-22 01:32:26,816 INFO L203 MainTranslator]: Completed pre-run [2021-02-22 01:32:26,829 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/bitvector/soft_float_2a.c.cil.c[423,436] [2021-02-22 01:32:26,862 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-22 01:32:26,879 INFO L208 MainTranslator]: Completed translation [2021-02-22 01:32:26,879 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:32:26 WrapperNode [2021-02-22 01:32:26,880 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-22 01:32:26,881 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-22 01:32:26,881 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-22 01:32:26,881 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-22 01:32:26,898 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:32:26" (1/1) ... [2021-02-22 01:32:26,898 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:32:26" (1/1) ... [2021-02-22 01:32:26,915 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:32:26" (1/1) ... [2021-02-22 01:32:26,916 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:32:26" (1/1) ... [2021-02-22 01:32:26,931 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:32:26" (1/1) ... [2021-02-22 01:32:26,953 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:32:26" (1/1) ... [2021-02-22 01:32:26,960 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:32:26" (1/1) ... [2021-02-22 01:32:26,966 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-22 01:32:26,971 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-22 01:32:26,971 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-22 01:32:26,971 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-22 01:32:26,972 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:32:26" (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 [2021-02-22 01:32:27,077 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-22 01:32:27,078 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-22 01:32:27,078 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-22 01:32:27,078 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-02-22 01:32:27,078 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2021-02-22 01:32:27,078 INFO L138 BoogieDeclarations]: Found implementation of procedure addflt [2021-02-22 01:32:27,079 INFO L138 BoogieDeclarations]: Found implementation of procedure mulflt [2021-02-22 01:32:27,079 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-22 01:32:27,080 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-22 01:32:27,080 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-22 01:32:27,080 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-22 01:32:27,081 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-22 01:32:27,081 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2021-02-22 01:32:27,082 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2021-02-22 01:32:27,082 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-02-22 01:32:27,083 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2021-02-22 01:32:27,083 INFO L130 BoogieDeclarations]: Found specification of procedure addflt [2021-02-22 01:32:27,084 INFO L130 BoogieDeclarations]: Found specification of procedure mulflt [2021-02-22 01:32:27,084 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-22 01:32:27,086 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-22 01:32:27,087 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-22 01:32:27,087 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-22 01:32:27,087 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-22 01:32:27,087 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-22 01:32:27,087 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-22 01:32:27,696 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-22 01:32:27,697 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-02-22 01:32:27,699 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.02 01:32:27 BoogieIcfgContainer [2021-02-22 01:32:27,699 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-22 01:32:27,700 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-22 01:32:27,701 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-22 01:32:27,704 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-22 01:32:27,704 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.02 01:32:26" (1/3) ... [2021-02-22 01:32:27,705 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15dcabec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.02 01:32:27, skipping insertion in model container [2021-02-22 01:32:27,705 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:32:26" (2/3) ... [2021-02-22 01:32:27,706 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15dcabec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.02 01:32:27, skipping insertion in model container [2021-02-22 01:32:27,706 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.02 01:32:27" (3/3) ... [2021-02-22 01:32:27,707 INFO L111 eAbstractionObserver]: Analyzing ICFG soft_float_2a.c.cil.c [2021-02-22 01:32:27,714 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-22 01:32:27,719 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-22 01:32:27,738 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-22 01:32:27,764 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-22 01:32:27,764 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-22 01:32:27,764 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-22 01:32:27,764 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-22 01:32:27,764 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-22 01:32:27,765 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-22 01:32:27,765 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-22 01:32:27,765 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-22 01:32:27,786 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states. [2021-02-22 01:32:27,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-02-22 01:32:27,805 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 01:32:27,806 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-22 01:32:27,806 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 01:32:27,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 01:32:27,814 INFO L82 PathProgramCache]: Analyzing trace with hash -485643019, now seen corresponding path program 1 times [2021-02-22 01:32:27,824 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 01:32:27,824 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2125647068] [2021-02-22 01:32:27,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 01:32:27,911 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 01:32:28,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:32:28,182 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:28,184 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:32:28,185 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:28,186 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-22 01:32:28,199 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:28,200 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:32:28,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 01:32:28,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:32:28,312 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:28,313 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:32:28,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-02-22 01:32:28,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:32:28,323 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:28,324 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:32:28,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-02-22 01:32:28,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:32:28,332 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:28,333 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:32:28,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-02-22 01:32:28,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:32:28,341 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:28,342 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:32:28,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-02-22 01:32:28,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:32:28,359 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:28,360 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:32:28,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-02-22 01:32:28,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:32:28,394 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:28,395 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:32:28,438 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2021-02-22 01:32:28,439 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2125647068] [2021-02-22 01:32:28,442 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 01:32:28,442 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-22 01:32:28,443 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521388725] [2021-02-22 01:32:28,457 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-22 01:32:28,458 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 01:32:28,476 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-22 01:32:28,479 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-22 01:32:28,482 INFO L87 Difference]: Start difference. First operand 161 states. Second operand 4 states. [2021-02-22 01:32:29,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 01:32:29,179 INFO L93 Difference]: Finished difference Result 262 states and 318 transitions. [2021-02-22 01:32:29,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-22 01:32:29,181 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 108 [2021-02-22 01:32:29,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 01:32:29,193 INFO L225 Difference]: With dead ends: 262 [2021-02-22 01:32:29,194 INFO L226 Difference]: Without dead ends: 134 [2021-02-22 01:32:29,199 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-02-22 01:32:29,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2021-02-22 01:32:29,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 134. [2021-02-22 01:32:29,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2021-02-22 01:32:29,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 152 transitions. [2021-02-22 01:32:29,269 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 152 transitions. Word has length 108 [2021-02-22 01:32:29,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 01:32:29,272 INFO L480 AbstractCegarLoop]: Abstraction has 134 states and 152 transitions. [2021-02-22 01:32:29,272 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-22 01:32:29,272 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 152 transitions. [2021-02-22 01:32:29,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-02-22 01:32:29,276 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 01:32:29,276 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2021-02-22 01:32:29,276 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-22 01:32:29,277 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 01:32:29,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 01:32:29,277 INFO L82 PathProgramCache]: Analyzing trace with hash 347783644, now seen corresponding path program 1 times [2021-02-22 01:32:29,278 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 01:32:29,278 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1391610378] [2021-02-22 01:32:29,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 01:32:29,282 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 01:32:29,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:32:29,360 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:29,361 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:32:29,362 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:29,363 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:32:29,367 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:29,368 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:32:29,374 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:29,375 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:32:29,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 01:32:29,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:32:29,431 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:29,432 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:32:29,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-02-22 01:32:29,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:32:29,448 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:29,448 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:32:29,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-02-22 01:32:29,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:32:29,457 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:29,458 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:32:29,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-02-22 01:32:29,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:32:29,468 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:29,469 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:32:29,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-02-22 01:32:29,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:32:29,483 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:29,484 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:32:29,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-02-22 01:32:29,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:32:29,509 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:29,510 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:32:29,549 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2021-02-22 01:32:29,550 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1391610378] [2021-02-22 01:32:29,550 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 01:32:29,550 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-02-22 01:32:29,551 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796450771] [2021-02-22 01:32:29,551 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-02-22 01:32:29,551 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 01:32:29,552 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-02-22 01:32:29,552 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-02-22 01:32:29,552 INFO L87 Difference]: Start difference. First operand 134 states and 152 transitions. Second operand 5 states. [2021-02-22 01:32:30,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 01:32:30,033 INFO L93 Difference]: Finished difference Result 150 states and 170 transitions. [2021-02-22 01:32:30,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-22 01:32:30,034 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 110 [2021-02-22 01:32:30,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 01:32:30,037 INFO L225 Difference]: With dead ends: 150 [2021-02-22 01:32:30,037 INFO L226 Difference]: Without dead ends: 133 [2021-02-22 01:32:30,039 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-02-22 01:32:30,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2021-02-22 01:32:30,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 133. [2021-02-22 01:32:30,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2021-02-22 01:32:30,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 150 transitions. [2021-02-22 01:32:30,065 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 150 transitions. Word has length 110 [2021-02-22 01:32:30,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 01:32:30,066 INFO L480 AbstractCegarLoop]: Abstraction has 133 states and 150 transitions. [2021-02-22 01:32:30,066 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-02-22 01:32:30,066 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 150 transitions. [2021-02-22 01:32:30,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-02-22 01:32:30,068 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 01:32:30,069 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2021-02-22 01:32:30,069 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-22 01:32:30,069 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 01:32:30,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 01:32:30,070 INFO L82 PathProgramCache]: Analyzing trace with hash 1662879100, now seen corresponding path program 1 times [2021-02-22 01:32:30,070 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 01:32:30,070 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [354079605] [2021-02-22 01:32:30,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 01:32:30,074 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 01:32:30,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:32:30,125 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:30,126 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:32:30,127 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:30,127 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:32:30,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 01:32:30,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:32:30,158 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:30,158 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:32:30,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-02-22 01:32:30,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:32:30,163 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:30,163 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:32:30,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-02-22 01:32:30,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:32:30,184 WARN L141 QuantifierPusher]: treesize reduction 7, result has 50.0 percent of original size [2021-02-22 01:32:30,185 WARN L147 QuantifierPusher]: treesize reduction 7, result has 50.0 percent of original size 7 [2021-02-22 01:32:30,193 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:30,194 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-22 01:32:30,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-02-22 01:32:30,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:32:30,206 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:30,207 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:32:30,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-02-22 01:32:30,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:32:30,231 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:30,232 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:32:30,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-02-22 01:32:30,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:32:30,243 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:30,244 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:32:30,259 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 8 proven. 16 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-02-22 01:32:30,260 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [354079605] [2021-02-22 01:32:30,261 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 01:32:30,261 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-02-22 01:32:30,261 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955255090] [2021-02-22 01:32:30,263 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-02-22 01:32:30,263 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 01:32:30,264 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-02-22 01:32:30,264 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-02-22 01:32:30,264 INFO L87 Difference]: Start difference. First operand 133 states and 150 transitions. Second operand 5 states. [2021-02-22 01:32:30,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 01:32:30,823 INFO L93 Difference]: Finished difference Result 271 states and 318 transitions. [2021-02-22 01:32:30,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-22 01:32:30,824 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 110 [2021-02-22 01:32:30,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 01:32:30,834 INFO L225 Difference]: With dead ends: 271 [2021-02-22 01:32:30,834 INFO L226 Difference]: Without dead ends: 174 [2021-02-22 01:32:30,839 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-02-22 01:32:30,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2021-02-22 01:32:30,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 151. [2021-02-22 01:32:30,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2021-02-22 01:32:30,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 173 transitions. [2021-02-22 01:32:30,906 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 173 transitions. Word has length 110 [2021-02-22 01:32:30,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 01:32:30,906 INFO L480 AbstractCegarLoop]: Abstraction has 151 states and 173 transitions. [2021-02-22 01:32:30,906 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-02-22 01:32:30,907 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 173 transitions. [2021-02-22 01:32:30,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-02-22 01:32:30,909 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 01:32:30,909 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 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, 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] [2021-02-22 01:32:30,909 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-22 01:32:30,909 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 01:32:30,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 01:32:30,910 INFO L82 PathProgramCache]: Analyzing trace with hash 1400205347, now seen corresponding path program 1 times [2021-02-22 01:32:30,910 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 01:32:30,911 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2040353343] [2021-02-22 01:32:30,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 01:32:30,913 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 01:32:30,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:32:30,940 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:30,941 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:32:30,942 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:30,942 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:32:30,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 01:32:30,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:32:30,991 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:30,993 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:32:30,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-02-22 01:32:30,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:32:31,002 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:31,008 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:32:31,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-02-22 01:32:31,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:32:31,026 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:31,027 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:32:31,028 WARN L141 QuantifierPusher]: treesize reduction 5, result has 58.3 percent of original size [2021-02-22 01:32:31,029 WARN L147 QuantifierPusher]: treesize reduction 5, result has 58.3 percent of original size 7 [2021-02-22 01:32:31,043 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:31,044 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-22 01:32:31,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-02-22 01:32:31,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:32:31,054 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:31,055 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:32:31,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-02-22 01:32:31,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:32:31,059 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:31,060 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:32:31,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-02-22 01:32:31,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:32:31,066 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:31,067 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:32:31,079 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-02-22 01:32:31,080 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2040353343] [2021-02-22 01:32:31,080 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 01:32:31,080 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-02-22 01:32:31,080 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161574836] [2021-02-22 01:32:31,081 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-02-22 01:32:31,081 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 01:32:31,081 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-02-22 01:32:31,082 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-02-22 01:32:31,082 INFO L87 Difference]: Start difference. First operand 151 states and 173 transitions. Second operand 5 states. [2021-02-22 01:32:31,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 01:32:31,565 INFO L93 Difference]: Finished difference Result 282 states and 331 transitions. [2021-02-22 01:32:31,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-22 01:32:31,566 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 113 [2021-02-22 01:32:31,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 01:32:31,568 INFO L225 Difference]: With dead ends: 282 [2021-02-22 01:32:31,568 INFO L226 Difference]: Without dead ends: 175 [2021-02-22 01:32:31,569 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-02-22 01:32:31,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2021-02-22 01:32:31,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 163. [2021-02-22 01:32:31,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2021-02-22 01:32:31,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 189 transitions. [2021-02-22 01:32:31,606 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 189 transitions. Word has length 113 [2021-02-22 01:32:31,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 01:32:31,606 INFO L480 AbstractCegarLoop]: Abstraction has 163 states and 189 transitions. [2021-02-22 01:32:31,606 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-02-22 01:32:31,606 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 189 transitions. [2021-02-22 01:32:31,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2021-02-22 01:32:31,608 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 01:32:31,609 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 1, 1] [2021-02-22 01:32:31,609 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-22 01:32:31,609 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 01:32:31,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 01:32:31,610 INFO L82 PathProgramCache]: Analyzing trace with hash -136962435, now seen corresponding path program 1 times [2021-02-22 01:32:31,610 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 01:32:31,610 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1261674985] [2021-02-22 01:32:31,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 01:32:31,624 WARN L141 QuantifierPusher]: treesize reduction 1, result has 95.5 percent of original size [2021-02-22 01:32:31,627 WARN L147 QuantifierPusher]: treesize reduction 1, result has 95.5 percent of original size 21 [2021-02-22 01:32:31,751 WARN L202 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 37 [2021-02-22 01:32:31,763 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:31,787 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-02-22 01:32:31,794 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:31,796 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-02-22 01:32:31,810 WARN L141 QuantifierPusher]: treesize reduction 10, result has 70.6 percent of original size [2021-02-22 01:32:31,822 INFO L723 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2021-02-22 01:32:31,827 INFO L730 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:31,827 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-22 01:32:31,829 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:31,836 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-02-22 01:32:31,839 WARN L147 QuantifierPusher]: treesize reduction 10, result has 70.6 percent of original size 24 [2021-02-22 01:32:31,844 WARN L141 QuantifierPusher]: treesize reduction 2, result has 95.7 percent of original size [2021-02-22 01:32:31,847 WARN L147 QuantifierPusher]: treesize reduction 2, result has 95.7 percent of original size 45 [2021-02-22 01:32:31,849 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:31,852 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-02-22 01:32:31,855 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:31,858 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-02-22 01:32:31,868 WARN L141 QuantifierPusher]: treesize reduction 10, result has 73.7 percent of original size [2021-02-22 01:32:31,870 INFO L723 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2021-02-22 01:32:31,872 INFO L730 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:31,872 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-22 01:32:31,875 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:31,879 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-02-22 01:32:31,881 WARN L147 QuantifierPusher]: treesize reduction 10, result has 73.7 percent of original size 28 [2021-02-22 01:32:31,884 WARN L141 QuantifierPusher]: treesize reduction 2, result has 96.1 percent of original size [2021-02-22 01:32:31,887 WARN L147 QuantifierPusher]: treesize reduction 2, result has 96.1 percent of original size 49 [2021-02-22 01:32:31,889 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:31,893 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-02-22 01:32:31,895 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:31,898 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-02-22 01:32:31,907 WARN L141 QuantifierPusher]: treesize reduction 10, result has 70.6 percent of original size [2021-02-22 01:32:31,909 INFO L723 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2021-02-22 01:32:31,911 INFO L730 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:31,912 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-22 01:32:31,914 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:32:31,918 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-02-22 01:32:31,920 WARN L147 QuantifierPusher]: treesize reduction 10, result has 70.6 percent of original size 24 [2021-02-22 01:32:31,924 WARN L141 QuantifierPusher]: treesize reduction 2, result has 95.7 percent of original size [2021-02-22 01:32:31,927 WARN L147 QuantifierPusher]: treesize reduction 2, result has 95.7 percent of original size 45 [2021-02-22 01:32:31,932 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.NullPointerException at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolationCore.accelerateNestedLoops(AcceleratedInterpolationCore.java:459) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolationCore.acceleratedInterpolationCoreIsCorrect(AcceleratedInterpolationCore.java:165) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.(AcceleratedInterpolation.java:162) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModulePreferences.construct(IpTcStrategyModulePreferences.java:145) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:241) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:165) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:84) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:74) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:511) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:437) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:372) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:62) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterateAllErrorsAtOnce(TraceAbstractionStarter.java:317) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:171) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:131) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-02-22 01:32:31,936 INFO L168 Benchmark]: Toolchain (without parser) took 5414.58 ms. Allocated memory was 174.1 MB in the beginning and 209.7 MB in the end (delta: 35.7 MB). Free memory was 130.2 MB in the beginning and 71.4 MB in the end (delta: 58.8 MB). Peak memory consumption was 95.3 MB. Max. memory is 8.0 GB. [2021-02-22 01:32:31,936 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 174.1 MB. Free memory is still 146.8 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-22 01:32:31,937 INFO L168 Benchmark]: CACSL2BoogieTranslator took 346.15 ms. Allocated memory is still 174.1 MB. Free memory was 129.0 MB in the beginning and 148.3 MB in the end (delta: -19.2 MB). Peak memory consumption was 6.9 MB. Max. memory is 8.0 GB. [2021-02-22 01:32:31,937 INFO L168 Benchmark]: Boogie Preprocessor took 88.30 ms. Allocated memory is still 174.1 MB. Free memory was 148.3 MB in the beginning and 156.9 MB in the end (delta: -8.6 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2021-02-22 01:32:31,938 INFO L168 Benchmark]: RCFGBuilder took 727.81 ms. Allocated memory is still 174.1 MB. Free memory was 156.9 MB in the beginning and 122.7 MB in the end (delta: 34.2 MB). Peak memory consumption was 33.6 MB. Max. memory is 8.0 GB. [2021-02-22 01:32:31,939 INFO L168 Benchmark]: TraceAbstraction took 4233.76 ms. Allocated memory was 174.1 MB in the beginning and 209.7 MB in the end (delta: 35.7 MB). Free memory was 122.3 MB in the beginning and 71.4 MB in the end (delta: 50.8 MB). Peak memory consumption was 86.8 MB. Max. memory is 8.0 GB. [2021-02-22 01:32:31,953 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 174.1 MB. Free memory is still 146.8 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 346.15 ms. Allocated memory is still 174.1 MB. Free memory was 129.0 MB in the beginning and 148.3 MB in the end (delta: -19.2 MB). Peak memory consumption was 6.9 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 88.30 ms. Allocated memory is still 174.1 MB. Free memory was 148.3 MB in the beginning and 156.9 MB in the end (delta: -8.6 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 727.81 ms. Allocated memory is still 174.1 MB. Free memory was 156.9 MB in the beginning and 122.7 MB in the end (delta: 34.2 MB). Peak memory consumption was 33.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 4233.76 ms. Allocated memory was 174.1 MB in the beginning and 209.7 MB in the end (delta: 35.7 MB). Free memory was 122.3 MB in the beginning and 71.4 MB in the end (delta: 50.8 MB). Peak memory consumption was 86.8 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: NullPointerException: null de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: NullPointerException: null: de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolationCore.accelerateNestedLoops(AcceleratedInterpolationCore.java:459) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...