/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 --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.use.separate.solver.for.trace.checks true -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/ldv-regression/1_3.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-23 23:04:09,895 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-23 23:04:09,898 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-23 23:04:09,952 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-02-23 23:04:09,985 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-23 23:04:09,988 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-23 23:04:09,991 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-23 23:04:09,993 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-23 23:04:09,996 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-23 23:04:10,013 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-23 23:04:10,020 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-23 23:04:10,028 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-23 23:04:10,030 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-23 23:04:10,032 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-23 23:04:10,034 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-23 23:04:10,037 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-23 23:04:10,046 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-23 23:04:10,062 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2021-02-23 23:04:10,086 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-23 23:04:10,086 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-23 23:04:10,091 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-23 23:04:10,091 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-23 23:04:10,091 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-23 23:04:10,092 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-23 23:04:10,092 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-23 23:04:10,092 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-23 23:04:10,093 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-23 23:04:10,093 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-23 23:04:10,094 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-23 23:04:10,094 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-23 23:04:10,095 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-23 23:04:10,095 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-23 23:04:10,096 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-23 23:04:10,096 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-23 23:04:10,096 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-23 23:04:10,096 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-23 23:04:10,097 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 23:04:10,097 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-23 23:04:10,097 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-23 23:04:10,098 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-23 23:04:10,098 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true [2021-02-23 23:04:10,550 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-23 23:04:10,579 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-23 23:04:10,582 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-23 23:04:10,584 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-23 23:04:10,585 INFO L275 PluginConnector]: CDTParser initialized [2021-02-23 23:04:10,586 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/1_3.i [2021-02-23 23:04:10,669 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b5664d50c/80d0410dc9ae4cfda9bc2988397a3223/FLAG1bc331cb1 [2021-02-23 23:04:11,365 INFO L306 CDTParser]: Found 1 translation units. [2021-02-23 23:04:11,365 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/1_3.i [2021-02-23 23:04:11,375 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b5664d50c/80d0410dc9ae4cfda9bc2988397a3223/FLAG1bc331cb1 [2021-02-23 23:04:11,710 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b5664d50c/80d0410dc9ae4cfda9bc2988397a3223 [2021-02-23 23:04:11,713 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-23 23:04:11,729 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-23 23:04:11,736 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-23 23:04:11,737 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-23 23:04:11,741 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-23 23:04:11,742 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 11:04:11" (1/1) ... [2021-02-23 23:04:11,743 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@52c1f575 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:04:11, skipping insertion in model container [2021-02-23 23:04:11,743 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 11:04:11" (1/1) ... [2021-02-23 23:04:11,752 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-23 23:04:11,770 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-23 23:04:11,958 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/1_3.i[285,298] [2021-02-23 23:04:12,007 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 23:04:12,018 INFO L203 MainTranslator]: Completed pre-run [2021-02-23 23:04:12,035 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/1_3.i[285,298] [2021-02-23 23:04:12,043 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 23:04:12,074 INFO L208 MainTranslator]: Completed translation [2021-02-23 23:04:12,075 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:04:12 WrapperNode [2021-02-23 23:04:12,075 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-23 23:04:12,076 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-23 23:04:12,076 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-23 23:04:12,077 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-23 23:04:12,089 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:04:12" (1/1) ... [2021-02-23 23:04:12,090 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:04:12" (1/1) ... [2021-02-23 23:04:12,096 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:04:12" (1/1) ... [2021-02-23 23:04:12,097 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:04:12" (1/1) ... [2021-02-23 23:04:12,105 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:04:12" (1/1) ... [2021-02-23 23:04:12,107 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:04:12" (1/1) ... [2021-02-23 23:04:12,109 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:04:12" (1/1) ... [2021-02-23 23:04:12,111 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-23 23:04:12,112 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-23 23:04:12,112 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-23 23:04:12,112 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-23 23:04:12,114 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:04:12" (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 [2021-02-23 23:04:12,205 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-23 23:04:12,205 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-23 23:04:12,206 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-23 23:04:12,206 INFO L138 BoogieDeclarations]: Found implementation of procedure __blast_assert [2021-02-23 23:04:12,206 INFO L138 BoogieDeclarations]: Found implementation of procedure getrr [2021-02-23 23:04:12,206 INFO L138 BoogieDeclarations]: Found implementation of procedure getPtr [2021-02-23 23:04:12,206 INFO L138 BoogieDeclarations]: Found implementation of procedure freePtr [2021-02-23 23:04:12,207 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-23 23:04:12,207 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-23 23:04:12,207 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-23 23:04:12,207 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-23 23:04:12,207 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-23 23:04:12,208 INFO L130 BoogieDeclarations]: Found specification of procedure __blast_assert [2021-02-23 23:04:12,208 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-23 23:04:12,208 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-23 23:04:12,208 INFO L130 BoogieDeclarations]: Found specification of procedure getrr [2021-02-23 23:04:12,208 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-23 23:04:12,208 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-23 23:04:12,209 INFO L130 BoogieDeclarations]: Found specification of procedure getPtr [2021-02-23 23:04:12,209 INFO L130 BoogieDeclarations]: Found specification of procedure freePtr [2021-02-23 23:04:12,209 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-23 23:04:12,209 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-23 23:04:12,209 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-23 23:04:12,210 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-23 23:04:12,210 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-23 23:04:12,210 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-23 23:04:12,628 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-23 23:04:12,628 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-02-23 23:04:12,631 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 11:04:12 BoogieIcfgContainer [2021-02-23 23:04:12,636 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-23 23:04:12,640 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-23 23:04:12,640 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-23 23:04:12,644 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-23 23:04:12,645 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.02 11:04:11" (1/3) ... [2021-02-23 23:04:12,646 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5edaa8ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 11:04:12, skipping insertion in model container [2021-02-23 23:04:12,646 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:04:12" (2/3) ... [2021-02-23 23:04:12,647 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5edaa8ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 11:04:12, skipping insertion in model container [2021-02-23 23:04:12,647 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 11:04:12" (3/3) ... [2021-02-23 23:04:12,648 INFO L111 eAbstractionObserver]: Analyzing ICFG 1_3.i [2021-02-23 23:04:12,661 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-23 23:04:12,665 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-23 23:04:12,683 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-23 23:04:12,722 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-23 23:04:12,722 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-23 23:04:12,723 INFO L378 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2021-02-23 23:04:12,723 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-23 23:04:12,723 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-23 23:04:12,723 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-23 23:04:12,723 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-23 23:04:12,724 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-23 23:04:12,751 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states. [2021-02-23 23:04:12,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-02-23 23:04:12,767 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 23:04:12,768 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] [2021-02-23 23:04:12,769 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 23:04:12,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 23:04:12,779 INFO L82 PathProgramCache]: Analyzing trace with hash -529000245, now seen corresponding path program 1 times [2021-02-23 23:04:12,790 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 23:04:12,792 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [318213959] [2021-02-23 23:04:12,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 23:04:12,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:04:13,080 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:13,081 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:04:13,083 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:13,083 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 23:04:13,096 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:13,097 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 23:04:13,104 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:13,105 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 23:04:13,113 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:13,114 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 23:04:13,124 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:13,125 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:04:13,135 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:13,136 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:04:13,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 23:04:13,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:04:13,192 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:13,193 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:04:13,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-02-23 23:04:13,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:04:13,239 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:13,240 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:04:13,241 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:13,242 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 23:04:13,255 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:13,256 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 23:04:13,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 23:04:13,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:04:13,281 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:13,282 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:04:13,294 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 23:04:13,295 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [318213959] [2021-02-23 23:04:13,297 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 23:04:13,297 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-02-23 23:04:13,298 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062757089] [2021-02-23 23:04:13,303 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-02-23 23:04:13,304 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 23:04:13,319 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-02-23 23:04:13,320 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2021-02-23 23:04:13,323 INFO L87 Difference]: Start difference. First operand 55 states. Second operand 11 states. [2021-02-23 23:04:13,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 23:04:13,833 INFO L93 Difference]: Finished difference Result 76 states and 81 transitions. [2021-02-23 23:04:13,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-02-23 23:04:13,836 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 41 [2021-02-23 23:04:13,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 23:04:13,844 INFO L225 Difference]: With dead ends: 76 [2021-02-23 23:04:13,845 INFO L226 Difference]: Without dead ends: 50 [2021-02-23 23:04:13,849 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2021-02-23 23:04:13,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2021-02-23 23:04:13,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2021-02-23 23:04:13,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2021-02-23 23:04:13,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 49 transitions. [2021-02-23 23:04:13,904 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 49 transitions. Word has length 41 [2021-02-23 23:04:13,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 23:04:13,905 INFO L480 AbstractCegarLoop]: Abstraction has 50 states and 49 transitions. [2021-02-23 23:04:13,905 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2021-02-23 23:04:13,905 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 49 transitions. [2021-02-23 23:04:13,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-02-23 23:04:13,907 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 23:04:13,907 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 23:04:13,908 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-23 23:04:13,908 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 23:04:13,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 23:04:13,909 INFO L82 PathProgramCache]: Analyzing trace with hash -1429413309, now seen corresponding path program 1 times [2021-02-23 23:04:13,909 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 23:04:13,909 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1733578438] [2021-02-23 23:04:13,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 23:04:13,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 23:04:13,948 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 23:04:13,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 23:04:13,976 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 23:04:14,010 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-23 23:04:14,011 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-23 23:04:14,012 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-23 23:04:14,057 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.02 11:04:14 BoogieIcfgContainer [2021-02-23 23:04:14,057 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-23 23:04:14,059 INFO L168 Benchmark]: Toolchain (without parser) took 2343.53 ms. Allocated memory is still 156.2 MB. Free memory was 132.5 MB in the beginning and 79.9 MB in the end (delta: 52.5 MB). Peak memory consumption was 53.3 MB. Max. memory is 8.0 GB. [2021-02-23 23:04:14,060 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 156.2 MB. Free memory was 129.9 MB in the beginning and 129.9 MB in the end (delta: 77.7 kB). There was no memory consumed. Max. memory is 8.0 GB. [2021-02-23 23:04:14,061 INFO L168 Benchmark]: CACSL2BoogieTranslator took 339.16 ms. Allocated memory is still 156.2 MB. Free memory was 131.3 MB in the beginning and 121.7 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-02-23 23:04:14,062 INFO L168 Benchmark]: Boogie Preprocessor took 35.05 ms. Allocated memory is still 156.2 MB. Free memory was 121.7 MB in the beginning and 120.2 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-02-23 23:04:14,063 INFO L168 Benchmark]: RCFGBuilder took 524.20 ms. Allocated memory is still 156.2 MB. Free memory was 120.2 MB in the beginning and 135.5 MB in the end (delta: -15.3 MB). Peak memory consumption was 16.8 MB. Max. memory is 8.0 GB. [2021-02-23 23:04:14,064 INFO L168 Benchmark]: TraceAbstraction took 1417.27 ms. Allocated memory is still 156.2 MB. Free memory was 135.0 MB in the beginning and 79.9 MB in the end (delta: 55.0 MB). Peak memory consumption was 55.6 MB. Max. memory is 8.0 GB. [2021-02-23 23:04:14,068 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 156.2 MB. Free memory was 129.9 MB in the beginning and 129.9 MB in the end (delta: 77.7 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 339.16 ms. Allocated memory is still 156.2 MB. Free memory was 131.3 MB in the beginning and 121.7 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 35.05 ms. Allocated memory is still 156.2 MB. Free memory was 121.7 MB in the beginning and 120.2 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 524.20 ms. Allocated memory is still 156.2 MB. Free memory was 120.2 MB in the beginning and 135.5 MB in the end (delta: -15.3 MB). Peak memory consumption was 16.8 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1417.27 ms. Allocated memory is still 156.2 MB. Free memory was 135.0 MB in the beginning and 79.9 MB in the end (delta: 55.0 MB). Peak memory consumption was 55.6 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 8]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L52] rr * ptr1 = 0; VAL [ptr1={0:0}] [L53] CALL, EXPR getPtr() [L39] CALL, EXPR getrr() [L32] rr * r = (rr *)malloc(sizeof *r); VAL [malloc(sizeof *r)={-1:0}, r={-1:0}] [L33] r -> state = 0 VAL [malloc(sizeof *r)={-1:0}, r={-1:0}] [L34] return r; VAL [\result={-1:0}, malloc(sizeof *r)={-1:0}, r={-1:0}] [L39] RET, EXPR getrr() VAL [getrr()={-1:0}] [L39] rr * r = getrr(); VAL [getrr()={-1:0}, r={-1:0}] [L40] r -> state = 1 VAL [r={-1:0}] [L41] return r; VAL [\result={-1:0}, r={-1:0}] [L53] RET, EXPR getPtr() VAL [getPtr()={-1:0}, ptr1={0:0}] [L53] ptr1 = getPtr() VAL [getPtr()={-1:0}, ptr1={-1:0}] [L54] CALL freePtr(ptr1) VAL [ptr={-1:0}] [L46] EXPR ptr -> state VAL [ptr={-1:0}, ptr={-1:0}, ptr -> state=1] [L46] (ptr -> state == 1) ? (0) : __blast_assert () VAL [ptr={-1:0}, ptr={-1:0}, ptr -> state=1] [L47] ptr -> state = 2 VAL [ptr={-1:0}, ptr={-1:0}] [L54] RET freePtr(ptr1) VAL [ptr1={-1:0}] [L56] CALL freePtr(ptr1) VAL [ptr={-1:0}] [L46] EXPR ptr -> state VAL [ptr={-1:0}, ptr={-1:0}, ptr -> state=2] [L46] (ptr -> state == 1) ? (0) : __blast_assert () VAL [ptr={-1:0}, ptr={-1:0}, ptr -> state=2] [L46] CALL __blast_assert () [L8] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 8 procedures, 58 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.2s, OverallIterations: 2, TraceHistogramMax: 2, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 44 SDtfs, 35 SDslu, 186 SDs, 0 SdLazy, 248 SolverSat, 14 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 23 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=55occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 90 NumberOfCodeBlocks, 90 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 40 ConstructedInterpolants, 0 QuantifiedInterpolants, 5520 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...