/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/AutomizerCTransformed.xml -s ../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf -i ../../../trunk/examples/svcomp/loop-invariants/even.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-a47f07a [2021-04-16 04:29:13,159 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-04-16 04:29:13,162 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-04-16 04:29:13,197 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-04-16 04:29:13,198 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-04-16 04:29:13,201 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-04-16 04:29:13,203 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-04-16 04:29:13,209 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-04-16 04:29:13,210 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-04-16 04:29:13,214 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-04-16 04:29:13,215 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-04-16 04:29:13,216 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-04-16 04:29:13,217 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-04-16 04:29:13,218 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-04-16 04:29:13,220 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-04-16 04:29:13,221 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-04-16 04:29:13,223 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-04-16 04:29:13,224 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-04-16 04:29:13,226 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-04-16 04:29:13,236 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-04-16 04:29:13,238 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-04-16 04:29:13,240 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-04-16 04:29:13,241 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-04-16 04:29:13,243 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-04-16 04:29:13,249 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-04-16 04:29:13,257 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-04-16 04:29:13,258 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-04-16 04:29:13,258 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-04-16 04:29:13,262 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2021-04-16 04:29:13,278 INFO L113 SettingsManager]: Loading preferences was successful [2021-04-16 04:29:13,278 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-04-16 04:29:13,282 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-04-16 04:29:13,282 INFO L138 SettingsManager]: * sizeof long=4 [2021-04-16 04:29:13,282 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-04-16 04:29:13,282 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-04-16 04:29:13,282 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-04-16 04:29:13,283 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-04-16 04:29:13,283 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-04-16 04:29:13,283 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-04-16 04:29:13,284 INFO L138 SettingsManager]: * sizeof long double=12 [2021-04-16 04:29:13,284 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-04-16 04:29:13,284 INFO L138 SettingsManager]: * Use constant arrays=true [2021-04-16 04:29:13,284 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-04-16 04:29:13,284 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-04-16 04:29:13,285 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-04-16 04:29:13,285 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-04-16 04:29:13,285 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-04-16 04:29:13,285 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-04-16 04:29:13,285 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-04-16 04:29:13,285 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-04-16 04:29:13,286 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-04-16 04:29:13,287 INFO L138 SettingsManager]: * TransformationType=LOOP_ACCELERATION_JORDAN WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-04-16 04:29:13,583 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-04-16 04:29:13,609 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-04-16 04:29:13,612 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-04-16 04:29:13,613 INFO L271 PluginConnector]: Initializing CDTParser... [2021-04-16 04:29:13,615 INFO L275 PluginConnector]: CDTParser initialized [2021-04-16 04:29:13,616 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invariants/even.c [2021-04-16 04:29:13,686 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1780bb71d/1134c95a4a80434e8b929c7945d1334c/FLAG31ca63fc8 [2021-04-16 04:29:14,089 INFO L306 CDTParser]: Found 1 translation units. [2021-04-16 04:29:14,089 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invariants/even.c [2021-04-16 04:29:14,094 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1780bb71d/1134c95a4a80434e8b929c7945d1334c/FLAG31ca63fc8 [2021-04-16 04:29:14,520 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1780bb71d/1134c95a4a80434e8b929c7945d1334c [2021-04-16 04:29:14,522 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-04-16 04:29:14,523 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-04-16 04:29:14,526 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-04-16 04:29:14,526 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-04-16 04:29:14,529 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-04-16 04:29:14,530 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.04 04:29:14" (1/1) ... [2021-04-16 04:29:14,531 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f6201ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 04:29:14, skipping insertion in model container [2021-04-16 04:29:14,531 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.04 04:29:14" (1/1) ... [2021-04-16 04:29:14,540 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-04-16 04:29:14,550 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-04-16 04:29:14,645 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invariants/even.c[351,364] [2021-04-16 04:29:14,653 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-04-16 04:29:14,659 INFO L203 MainTranslator]: Completed pre-run [2021-04-16 04:29:14,670 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invariants/even.c[351,364] [2021-04-16 04:29:14,672 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-04-16 04:29:14,685 INFO L208 MainTranslator]: Completed translation [2021-04-16 04:29:14,685 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 04:29:14 WrapperNode [2021-04-16 04:29:14,685 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-04-16 04:29:14,686 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-04-16 04:29:14,686 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-04-16 04:29:14,686 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-04-16 04:29:14,739 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 04:29:14" (1/1) ... [2021-04-16 04:29:14,741 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 04:29:14" (1/1) ... [2021-04-16 04:29:14,748 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 04:29:14" (1/1) ... [2021-04-16 04:29:14,748 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 04:29:14" (1/1) ... [2021-04-16 04:29:14,759 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 04:29:14" (1/1) ... [2021-04-16 04:29:14,764 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 04:29:14" (1/1) ... [2021-04-16 04:29:14,770 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 04:29:14" (1/1) ... [2021-04-16 04:29:14,773 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-04-16 04:29:14,775 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-04-16 04:29:14,775 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-04-16 04:29:14,775 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-04-16 04:29:14,776 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 04:29:14" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-04-16 04:29:14,850 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-04-16 04:29:14,850 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-04-16 04:29:14,851 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-04-16 04:29:14,851 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-04-16 04:29:14,851 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-04-16 04:29:14,851 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-04-16 04:29:14,851 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-04-16 04:29:14,851 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-04-16 04:29:14,852 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-04-16 04:29:14,852 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-04-16 04:29:14,852 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-04-16 04:29:14,852 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-04-16 04:29:14,852 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-04-16 04:29:14,852 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-04-16 04:29:14,853 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-04-16 04:29:14,853 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-04-16 04:29:14,853 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-04-16 04:29:14,853 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-04-16 04:29:15,117 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-04-16 04:29:15,117 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-04-16 04:29:15,119 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.04 04:29:15 BoogieIcfgContainer [2021-04-16 04:29:15,119 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-04-16 04:29:15,119 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2021-04-16 04:29:15,119 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2021-04-16 04:29:15,120 INFO L275 PluginConnector]: IcfgTransformer initialized [2021-04-16 04:29:15,122 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.04 04:29:15" (1/1) ... [2021-04-16 04:29:15,152 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 16.04 04:29:15 BasicIcfg [2021-04-16 04:29:15,152 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2021-04-16 04:29:15,153 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-04-16 04:29:15,153 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-04-16 04:29:15,155 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-04-16 04:29:15,156 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.04 04:29:14" (1/4) ... [2021-04-16 04:29:15,173 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@632c59b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.04 04:29:15, skipping insertion in model container [2021-04-16 04:29:15,173 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 04:29:14" (2/4) ... [2021-04-16 04:29:15,173 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@632c59b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.04 04:29:15, skipping insertion in model container [2021-04-16 04:29:15,173 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.04 04:29:15" (3/4) ... [2021-04-16 04:29:15,174 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@632c59b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.04 04:29:15, skipping insertion in model container [2021-04-16 04:29:15,174 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 16.04 04:29:15" (4/4) ... [2021-04-16 04:29:15,175 INFO L111 eAbstractionObserver]: Analyzing ICFG even.cJordan [2021-04-16 04:29:15,180 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2021-04-16 04:29:15,184 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-04-16 04:29:15,206 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-04-16 04:29:15,224 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-04-16 04:29:15,224 INFO L377 AbstractCegarLoop]: Hoare is false [2021-04-16 04:29:15,224 INFO L378 AbstractCegarLoop]: Compute interpolants for ForwardPredicates [2021-04-16 04:29:15,224 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-04-16 04:29:15,224 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-04-16 04:29:15,225 INFO L381 AbstractCegarLoop]: Difference is false [2021-04-16 04:29:15,225 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-04-16 04:29:15,225 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-04-16 04:29:15,235 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 13 states have internal predecessors, (16), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-04-16 04:29:15,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-04-16 04:29:15,240 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 04:29:15,241 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 04:29:15,241 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 04:29:15,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 04:29:15,245 INFO L82 PathProgramCache]: Analyzing trace with hash -487068095, now seen corresponding path program 1 times [2021-04-16 04:29:15,252 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-16 04:29:15,253 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2037584541] [2021-04-16 04:29:15,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 04:29:15,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 04:29:15,365 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 04:29:15,367 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 04:29:15,368 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 04:29:15,368 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 04:29:15,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 04:29:15,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 04:29:15,445 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 04:29:15,446 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 04:29:15,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 04:29:15,448 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2037584541] [2021-04-16 04:29:15,448 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 04:29:15,449 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-04-16 04:29:15,449 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888150214] [2021-04-16 04:29:15,452 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-04-16 04:29:15,453 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-16 04:29:15,469 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-04-16 04:29:15,470 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-04-16 04:29:15,473 INFO L87 Difference]: Start difference. First operand has 20 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 13 states have internal predecessors, (16), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 04:29:15,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 04:29:15,525 INFO L93 Difference]: Finished difference Result 20 states and 20 transitions. [2021-04-16 04:29:15,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-04-16 04:29:15,527 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2021-04-16 04:29:15,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 04:29:15,532 INFO L225 Difference]: With dead ends: 20 [2021-04-16 04:29:15,533 INFO L226 Difference]: Without dead ends: 13 [2021-04-16 04:29:15,534 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 52.0ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-04-16 04:29:15,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2021-04-16 04:29:15,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2021-04-16 04:29:15,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 04:29:15,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2021-04-16 04:29:15,557 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 11 [2021-04-16 04:29:15,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 04:29:15,557 INFO L480 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2021-04-16 04:29:15,558 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 04:29:15,558 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2021-04-16 04:29:15,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-04-16 04:29:15,558 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 04:29:15,558 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 04:29:15,559 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-04-16 04:29:15,559 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 04:29:15,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 04:29:15,559 INFO L82 PathProgramCache]: Analyzing trace with hash 2110189820, now seen corresponding path program 1 times [2021-04-16 04:29:15,560 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-16 04:29:15,560 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573569504] [2021-04-16 04:29:15,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 04:29:15,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 04:29:15,645 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 04:29:15,647 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 04:29:15,650 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 04:29:15,650 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 04:29:15,654 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 04:29:15,654 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 04:29:15,661 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 04:29:15,662 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 04:29:15,668 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 04:29:15,668 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 04:29:15,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 04:29:15,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 04:29:15,706 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 04:29:15,706 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 04:29:15,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 04:29:15,707 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [573569504] [2021-04-16 04:29:15,707 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 04:29:15,707 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-04-16 04:29:15,707 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010574124] [2021-04-16 04:29:15,708 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-04-16 04:29:15,709 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-16 04:29:15,709 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-04-16 04:29:15,710 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-04-16 04:29:15,710 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 04:29:15,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 04:29:15,850 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2021-04-16 04:29:15,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-04-16 04:29:15,851 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2021-04-16 04:29:15,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 04:29:15,852 INFO L225 Difference]: With dead ends: 18 [2021-04-16 04:29:15,852 INFO L226 Difference]: Without dead ends: 15 [2021-04-16 04:29:15,853 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 130.7ms TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-04-16 04:29:15,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2021-04-16 04:29:15,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2021-04-16 04:29:15,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 10 states have (on average 1.1) internal successors, (11), 10 states have internal predecessors, (11), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 04:29:15,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2021-04-16 04:29:15,860 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 12 [2021-04-16 04:29:15,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 04:29:15,863 INFO L480 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2021-04-16 04:29:15,863 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 04:29:15,864 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2021-04-16 04:29:15,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-04-16 04:29:15,869 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 04:29:15,869 INFO L519 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 04:29:15,870 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-04-16 04:29:15,870 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 04:29:15,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 04:29:15,870 INFO L82 PathProgramCache]: Analyzing trace with hash 1523776447, now seen corresponding path program 1 times [2021-04-16 04:29:15,870 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-16 04:29:15,871 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1484346447] [2021-04-16 04:29:15,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 04:29:15,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 04:29:15,918 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 04:29:15,918 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 04:29:15,919 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 04:29:15,919 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 04:29:15,931 INFO L142 QuantifierPusher]: treesize reduction 1, result has 96.3 percent of original size [2021-04-16 04:29:15,935 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-04-16 04:29:15,964 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 04:29:15,964 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 04:29:15,970 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 04:29:15,971 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 04:29:15,977 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 04:29:15,978 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 04:29:16,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 04:29:16,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 04:29:16,029 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 04:29:16,029 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 04:29:16,030 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 04:29:16,030 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1484346447] [2021-04-16 04:29:16,031 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1551287154] [2021-04-16 04:29:16,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-16 04:29:16,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 04:29:16,175 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 10 conjunts are in the unsatisfiable core [2021-04-16 04:29:16,179 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-04-16 04:29:16,194 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 04:29:16,195 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 04:29:16,196 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 04:29:16,196 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 04:29:16,196 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 04:29:16,197 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 04:29:16,197 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 04:29:16,198 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 04:29:16,199 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 04:29:16,199 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 04:29:16,200 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 04:29:16,200 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 04:29:16,200 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 04:29:16,201 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 04:29:16,201 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 04:29:16,202 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 04:29:16,208 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 04:29:16,209 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 04:29:16,209 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 04:29:16,210 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 04:29:16,210 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 04:29:16,211 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 04:29:16,211 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 04:29:16,211 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 04:29:16,212 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 04:29:16,213 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 04:29:16,213 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 04:29:16,214 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 04:29:16,214 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 04:29:16,214 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 04:29:16,215 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 04:29:16,215 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 04:29:16,216 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 04:29:16,216 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 04:29:16,217 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 04:29:16,217 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 04:29:16,218 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 04:29:16,218 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 04:29:16,218 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 04:29:16,219 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 04:29:16,219 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 04:29:16,220 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 04:29:16,249 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 04:29:16,250 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 04:29:16,251 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 04:29:16,252 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 04:29:16,253 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 04:29:16,253 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 04:29:16,254 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 04:29:16,254 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 04:29:16,254 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 04:29:16,255 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 04:29:16,255 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 04:29:16,256 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 04:29:16,257 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 04:29:16,258 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 04:29:16,264 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 04:29:16,275 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 04:29:16,276 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 04:29:16,277 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 04:29:16,278 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 04:29:16,278 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 04:29:16,279 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 04:29:16,279 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 04:29:16,291 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 04:29:16,292 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 04:29:16,292 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 04:29:16,293 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 04:29:16,294 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 04:29:16,294 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 04:29:16,296 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 04:29:16,297 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 04:29:16,298 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 04:29:16,298 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 04:29:16,299 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 04:29:16,299 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 04:29:16,299 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 04:29:16,300 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 04:29:16,300 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 04:29:16,301 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 04:29:16,302 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 04:29:16,303 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 04:29:16,303 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 04:29:16,303 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 04:29:16,304 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 04:29:16,306 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 04:29:16,309 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 04:29:16,310 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 04:29:16,319 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 04:29:16,321 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 04:29:16,322 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 04:29:16,324 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 04:29:16,325 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 04:29:16,327 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 04:29:16,327 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 04:29:16,331 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 04:29:16,341 INFO L142 QuantifierPusher]: treesize reduction 6, result has 14.3 percent of original size [2021-04-16 04:29:16,341 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 04:29:16,342 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 04:29:16,342 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 04:29:16,343 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 04:29:16,343 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 04:29:16,343 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 04:29:16,344 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 04:29:16,344 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 04:29:16,344 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-04-16 04:29:16,345 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 10 [2021-04-16 04:29:16,345 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778998440] [2021-04-16 04:29:16,346 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-04-16 04:29:16,346 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-16 04:29:16,350 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-04-16 04:29:16,355 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-04-16 04:29:16,355 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand has 10 states, 10 states have (on average 1.6) internal successors, (16), 7 states have internal predecessors, (16), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 04:29:16,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 04:29:16,578 INFO L93 Difference]: Finished difference Result 16 states and 17 transitions. [2021-04-16 04:29:16,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-04-16 04:29:16,579 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.6) internal successors, (16), 7 states have internal predecessors, (16), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2021-04-16 04:29:16,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 04:29:16,579 INFO L225 Difference]: With dead ends: 16 [2021-04-16 04:29:16,580 INFO L226 Difference]: Without dead ends: 0 [2021-04-16 04:29:16,581 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 249.0ms TimeCoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2021-04-16 04:29:16,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-04-16 04:29:16,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-04-16 04:29:16,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-16 04:29:16,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-04-16 04:29:16,581 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2021-04-16 04:29:16,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 04:29:16,581 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-04-16 04:29:16,582 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 1.6) internal successors, (16), 7 states have internal predecessors, (16), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 04:29:16,582 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-04-16 04:29:16,582 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-04-16 04:29:16,793 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-04-16 04:29:16,796 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.04 04:29:16 BasicIcfg [2021-04-16 04:29:16,797 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-04-16 04:29:16,797 INFO L168 Benchmark]: Toolchain (without parser) took 2273.82 ms. Allocated memory is still 175.1 MB. Free memory was 140.9 MB in the beginning and 113.9 MB in the end (delta: 27.0 MB). Peak memory consumption was 29.1 MB. Max. memory is 8.0 GB. [2021-04-16 04:29:16,798 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 175.1 MB. Free memory is still 157.1 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-04-16 04:29:16,798 INFO L168 Benchmark]: CACSL2BoogieTranslator took 159.27 ms. Allocated memory is still 175.1 MB. Free memory was 140.7 MB in the beginning and 131.5 MB in the end (delta: 9.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 8.0 GB. [2021-04-16 04:29:16,798 INFO L168 Benchmark]: Boogie Preprocessor took 87.09 ms. Allocated memory is still 175.1 MB. Free memory was 131.5 MB in the beginning and 158.4 MB in the end (delta: -26.9 MB). Peak memory consumption was 4.5 MB. Max. memory is 8.0 GB. [2021-04-16 04:29:16,799 INFO L168 Benchmark]: RCFGBuilder took 344.13 ms. Allocated memory is still 175.1 MB. Free memory was 158.4 MB in the beginning and 144.8 MB in the end (delta: 13.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2021-04-16 04:29:16,799 INFO L168 Benchmark]: IcfgTransformer took 32.67 ms. Allocated memory is still 175.1 MB. Free memory was 144.8 MB in the beginning and 143.8 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-04-16 04:29:16,799 INFO L168 Benchmark]: TraceAbstraction took 1643.49 ms. Allocated memory is still 175.1 MB. Free memory was 143.2 MB in the beginning and 113.9 MB in the end (delta: 29.3 MB). Peak memory consumption was 30.9 MB. Max. memory is 8.0 GB. [2021-04-16 04:29:16,801 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 175.1 MB. Free memory is still 157.1 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 159.27 ms. Allocated memory is still 175.1 MB. Free memory was 140.7 MB in the beginning and 131.5 MB in the end (delta: 9.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 87.09 ms. Allocated memory is still 175.1 MB. Free memory was 131.5 MB in the beginning and 158.4 MB in the end (delta: -26.9 MB). Peak memory consumption was 4.5 MB. Max. memory is 8.0 GB. * RCFGBuilder took 344.13 ms. Allocated memory is still 175.1 MB. Free memory was 158.4 MB in the beginning and 144.8 MB in the end (delta: 13.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * IcfgTransformer took 32.67 ms. Allocated memory is still 175.1 MB. Free memory was 144.8 MB in the beginning and 143.8 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1643.49 ms. Allocated memory is still 175.1 MB. Free memory was 143.2 MB in the beginning and 113.9 MB in the end (delta: 29.3 MB). Peak memory consumption was 30.9 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 7]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 20 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1571.4ms, OverallIterations: 3, TraceHistogramMax: 2, EmptinessCheckTime: 14.8ms, AutomataDifference: 458.6ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 6.8ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 37 SDtfs, 31 SDslu, 45 SDs, 0 SdLazy, 68 SolverSat, 15 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 103.6ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 40 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 431.9ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred in iteration=0, InterpolantAutomatonStates: 17, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 19.8ms AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 28.7ms SsaConstructionTime, 83.1ms SatisfiabilityAnalysisTime, 548.0ms InterpolantComputationTime, 51 NumberOfCodeBlocks, 51 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 47 ConstructedInterpolants, 0 QuantifiedInterpolants, 209 SizeOfPredicates, 1 NumberOfNonLiveVariables, 107 ConjunctsInSsa, 10 ConjunctsInUnsatCore, 4 InterpolantComputations, 2 PerfectInterpolantSequences, 0/4 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...