/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCTransformed.xml -s ../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf -i ../../../trunk/examples/svcomp/nla-digbench-scaling/fermat1-ll_valuebound5.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-c225d54 [2021-05-02 20:35:56,583 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-02 20:35:56,585 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-02 20:35:56,621 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-05-02 20:35:56,622 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-05-02 20:35:56,624 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-05-02 20:35:56,626 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-05-02 20:35:56,630 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-05-02 20:35:56,632 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-05-02 20:35:56,635 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-05-02 20:35:56,635 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-05-02 20:35:56,636 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-05-02 20:35:56,636 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-05-02 20:35:56,638 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-05-02 20:35:56,639 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-05-02 20:35:56,640 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-05-02 20:35:56,642 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-05-02 20:35:56,642 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-05-02 20:35:56,644 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-05-02 20:35:56,648 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-05-02 20:35:56,650 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-05-02 20:35:56,651 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-05-02 20:35:56,651 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-05-02 20:35:56,653 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-05-02 20:35:56,656 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-05-02 20:35:56,662 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-02 20:35:56,662 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-02 20:35:56,663 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-02 20:35:56,665 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2021-05-02 20:35:56,677 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-02 20:35:56,677 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-02 20:35:56,680 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-02 20:35:56,680 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-02 20:35:56,680 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-02 20:35:56,680 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-02 20:35:56,680 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-02 20:35:56,680 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-02 20:35:56,680 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-02 20:35:56,680 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-02 20:35:56,681 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-02 20:35:56,681 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-02 20:35:56,681 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-02 20:35:56,681 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-02 20:35:56,682 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-02 20:35:56,682 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-02 20:35:56,682 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-05-02 20:35:56,682 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-02 20:35:56,682 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-02 20:35:56,682 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-02 20:35:56,682 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-05-02 20:35:56,683 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-05-02 20:35:56,683 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2021-05-02 20:35:56,930 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-02 20:35:56,964 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-02 20:35:56,966 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-02 20:35:56,967 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-02 20:35:56,967 INFO L275 PluginConnector]: CDTParser initialized [2021-05-02 20:35:56,968 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/fermat1-ll_valuebound5.c [2021-05-02 20:35:57,016 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b8a1918a3/c9a19890c4fd4ca9a827d9b12b2b2fbc/FLAG005941b27 [2021-05-02 20:35:57,420 INFO L306 CDTParser]: Found 1 translation units. [2021-05-02 20:35:57,420 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/fermat1-ll_valuebound5.c [2021-05-02 20:35:57,439 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b8a1918a3/c9a19890c4fd4ca9a827d9b12b2b2fbc/FLAG005941b27 [2021-05-02 20:35:57,448 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b8a1918a3/c9a19890c4fd4ca9a827d9b12b2b2fbc [2021-05-02 20:35:57,449 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-02 20:35:57,450 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-05-02 20:35:57,458 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-02 20:35:57,458 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-02 20:35:57,460 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-02 20:35:57,461 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.05 08:35:57" (1/1) ... [2021-05-02 20:35:57,461 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7906e5ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 08:35:57, skipping insertion in model container [2021-05-02 20:35:57,461 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.05 08:35:57" (1/1) ... [2021-05-02 20:35:57,465 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-02 20:35:57,494 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-02 20:35:57,618 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/fermat1-ll_valuebound5.c[535,548] [2021-05-02 20:35:57,699 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-02 20:35:57,704 INFO L203 MainTranslator]: Completed pre-run [2021-05-02 20:35:57,713 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/fermat1-ll_valuebound5.c[535,548] [2021-05-02 20:35:57,732 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-02 20:35:57,740 INFO L208 MainTranslator]: Completed translation [2021-05-02 20:35:57,740 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 08:35:57 WrapperNode [2021-05-02 20:35:57,740 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-02 20:35:57,742 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-02 20:35:57,742 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-02 20:35:57,743 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-02 20:35:57,750 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 08:35:57" (1/1) ... [2021-05-02 20:35:57,750 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 08:35:57" (1/1) ... [2021-05-02 20:35:57,761 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 08:35:57" (1/1) ... [2021-05-02 20:35:57,761 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 08:35:57" (1/1) ... [2021-05-02 20:35:57,770 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 08:35:57" (1/1) ... [2021-05-02 20:35:57,773 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 08:35:57" (1/1) ... [2021-05-02 20:35:57,774 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 08:35:57" (1/1) ... [2021-05-02 20:35:57,775 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-02 20:35:57,775 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-02 20:35:57,775 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-02 20:35:57,776 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-02 20:35:57,776 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 08:35:57" (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 [2021-05-02 20:35:57,829 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-05-02 20:35:57,829 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-02 20:35:57,829 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-05-02 20:35:57,829 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-05-02 20:35:57,829 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-05-02 20:35:57,829 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-05-02 20:35:57,829 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-05-02 20:35:57,829 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-05-02 20:35:57,830 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-05-02 20:35:57,830 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-02 20:35:57,830 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-05-02 20:35:57,830 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-05-02 20:35:57,830 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-05-02 20:35:57,831 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-05-02 20:35:57,831 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-05-02 20:35:57,831 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-02 20:35:57,831 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-02 20:35:57,831 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-02 20:35:57,832 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-05-02 20:35:57,832 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-02 20:35:58,020 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-02 20:35:58,020 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2021-05-02 20:35:58,021 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 08:35:58 BoogieIcfgContainer [2021-05-02 20:35:58,021 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-02 20:35:58,022 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2021-05-02 20:35:58,022 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2021-05-02 20:35:58,022 INFO L275 PluginConnector]: IcfgTransformer initialized [2021-05-02 20:35:58,024 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 08:35:58" (1/1) ... [2021-05-02 20:35:58,035 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 02.05 08:35:58 BasicIcfg [2021-05-02 20:35:58,035 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2021-05-02 20:35:58,036 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-02 20:35:58,036 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-02 20:35:58,038 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-02 20:35:58,038 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.05 08:35:57" (1/4) ... [2021-05-02 20:35:58,039 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29eb6761 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.05 08:35:58, skipping insertion in model container [2021-05-02 20:35:58,039 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 08:35:57" (2/4) ... [2021-05-02 20:35:58,039 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29eb6761 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.05 08:35:58, skipping insertion in model container [2021-05-02 20:35:58,039 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 08:35:58" (3/4) ... [2021-05-02 20:35:58,039 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29eb6761 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.05 08:35:58, skipping insertion in model container [2021-05-02 20:35:58,039 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 02.05 08:35:58" (4/4) ... [2021-05-02 20:35:58,040 INFO L111 eAbstractionObserver]: Analyzing ICFG fermat1-ll_valuebound5.cJordan [2021-05-02 20:35:58,043 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2021-05-02 20:35:58,045 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-05-02 20:35:58,056 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-02 20:35:58,067 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-05-02 20:35:58,067 INFO L377 AbstractCegarLoop]: Hoare is false [2021-05-02 20:35:58,067 INFO L378 AbstractCegarLoop]: Compute interpolants for ForwardPredicates [2021-05-02 20:35:58,067 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-02 20:35:58,067 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-02 20:35:58,067 INFO L381 AbstractCegarLoop]: Difference is false [2021-05-02 20:35:58,067 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-02 20:35:58,067 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-02 20:35:58,075 INFO L276 IsEmpty]: Start isEmpty. Operand has 37 states, 21 states have (on average 1.5714285714285714) internal successors, (33), 22 states have internal predecessors, (33), 10 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2021-05-02 20:35:58,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-02 20:35:58,080 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 20:35:58,080 INFO L523 BasicCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 20:35:58,080 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 20:35:58,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 20:35:58,083 INFO L82 PathProgramCache]: Analyzing trace with hash 1042421720, now seen corresponding path program 1 times [2021-05-02 20:35:58,088 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 20:35:58,088 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102323096] [2021-05-02 20:35:58,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 20:35:58,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 20:35:58,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 20:35:58,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 20:35:58,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-05-02 20:35:58,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 20:35:58,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-05-02 20:35:58,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 20:35:58,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-05-02 20:35:58,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 20:35:58,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-05-02 20:35:58,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 20:35:58,257 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-05-02 20:35:58,258 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 20:35:58,258 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102323096] [2021-05-02 20:35:58,258 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1102323096] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 20:35:58,259 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 20:35:58,259 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-05-02 20:35:58,259 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525619005] [2021-05-02 20:35:58,262 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-05-02 20:35:58,262 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 20:35:58,270 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-05-02 20:35:58,270 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-02 20:35:58,271 INFO L87 Difference]: Start difference. First operand has 37 states, 21 states have (on average 1.5714285714285714) internal successors, (33), 22 states have internal predecessors, (33), 10 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-05-02 20:35:58,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 20:35:58,342 INFO L93 Difference]: Finished difference Result 37 states and 45 transitions. [2021-05-02 20:35:58,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-05-02 20:35:58,343 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 33 [2021-05-02 20:35:58,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 20:35:58,348 INFO L225 Difference]: With dead ends: 37 [2021-05-02 20:35:58,348 INFO L226 Difference]: Without dead ends: 32 [2021-05-02 20:35:58,349 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 46.2ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-02 20:35:58,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2021-05-02 20:35:58,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2021-05-02 20:35:58,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 18 states have (on average 1.2222222222222223) internal successors, (22), 19 states have internal predecessors, (22), 10 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2021-05-02 20:35:58,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 40 transitions. [2021-05-02 20:35:58,370 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 40 transitions. Word has length 33 [2021-05-02 20:35:58,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 20:35:58,371 INFO L480 AbstractCegarLoop]: Abstraction has 32 states and 40 transitions. [2021-05-02 20:35:58,371 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-05-02 20:35:58,371 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 40 transitions. [2021-05-02 20:35:58,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-02 20:35:58,372 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 20:35:58,372 INFO L523 BasicCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 20:35:58,372 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-02 20:35:58,372 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 20:35:58,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 20:35:58,373 INFO L82 PathProgramCache]: Analyzing trace with hash 104571547, now seen corresponding path program 1 times [2021-05-02 20:35:58,373 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 20:35:58,373 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924247759] [2021-05-02 20:35:58,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 20:35:58,386 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 20:35:58,386 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1646444690] [2021-05-02 20:35:58,386 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 [2021-05-02 20:35:58,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 20:35:58,474 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 21 conjunts are in the unsatisfiable core [2021-05-02 20:35:58,478 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 20:35:58,533 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:35:58,535 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:35:58,551 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:35:58,553 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:35:58,564 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:35:58,566 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:35:58,692 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:35:58,700 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:35:58,750 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-05-02 20:35:58,751 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 20:35:58,751 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924247759] [2021-05-02 20:35:58,751 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 20:35:58,751 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1646444690] [2021-05-02 20:35:58,751 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1646444690] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 20:35:58,751 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 20:35:58,751 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-05-02 20:35:58,751 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757068247] [2021-05-02 20:35:58,752 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-02 20:35:58,752 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 20:35:58,753 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-02 20:35:58,753 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-05-02 20:35:58,753 INFO L87 Difference]: Start difference. First operand 32 states and 40 transitions. Second operand has 8 states, 8 states have (on average 1.875) internal successors, (15), 7 states have internal predecessors, (15), 3 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-05-02 20:36:03,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 20:36:03,899 INFO L93 Difference]: Finished difference Result 46 states and 59 transitions. [2021-05-02 20:36:03,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-02 20:36:03,899 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.875) internal successors, (15), 7 states have internal predecessors, (15), 3 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 33 [2021-05-02 20:36:03,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 20:36:03,900 INFO L225 Difference]: With dead ends: 46 [2021-05-02 20:36:03,900 INFO L226 Difference]: Without dead ends: 46 [2021-05-02 20:36:03,901 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 68.2ms TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-05-02 20:36:03,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2021-05-02 20:36:03,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 45. [2021-05-02 20:36:03,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 27 states have (on average 1.2592592592592593) internal successors, (34), 28 states have internal predecessors, (34), 13 states have call successors, (13), 5 states have call predecessors, (13), 4 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2021-05-02 20:36:03,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 58 transitions. [2021-05-02 20:36:03,907 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 58 transitions. Word has length 33 [2021-05-02 20:36:03,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 20:36:03,907 INFO L480 AbstractCegarLoop]: Abstraction has 45 states and 58 transitions. [2021-05-02 20:36:03,907 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 1.875) internal successors, (15), 7 states have internal predecessors, (15), 3 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-05-02 20:36:03,907 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 58 transitions. [2021-05-02 20:36:03,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-02 20:36:03,908 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 20:36:03,908 INFO L523 BasicCegarLoop]: trace histogram [4, 4, 4, 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] [2021-05-02 20:36:04,122 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-05-02 20:36:04,122 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 20:36:04,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 20:36:04,123 INFO L82 PathProgramCache]: Analyzing trace with hash -844389750, now seen corresponding path program 1 times [2021-05-02 20:36:04,123 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 20:36:04,131 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594280469] [2021-05-02 20:36:04,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 20:36:04,141 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 20:36:04,141 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1261983120] [2021-05-02 20:36:04,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 20:36:04,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 20:36:04,230 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 18 conjunts are in the unsatisfiable core [2021-05-02 20:36:04,231 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 20:36:04,262 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:04,264 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:04,273 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:04,275 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:04,285 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:04,286 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:04,299 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:04,301 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:04,353 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:04,357 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:04,379 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-05-02 20:36:04,379 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 20:36:04,380 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594280469] [2021-05-02 20:36:04,380 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 20:36:04,380 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1261983120] [2021-05-02 20:36:04,380 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1261983120] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 20:36:04,380 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 20:36:04,380 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2021-05-02 20:36:04,380 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712510927] [2021-05-02 20:36:04,380 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-05-02 20:36:04,380 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 20:36:04,381 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-05-02 20:36:04,381 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-05-02 20:36:04,381 INFO L87 Difference]: Start difference. First operand 45 states and 58 transitions. Second operand has 11 states, 10 states have (on average 1.9) internal successors, (19), 9 states have internal predecessors, (19), 3 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2021-05-02 20:36:16,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 20:36:16,404 INFO L93 Difference]: Finished difference Result 61 states and 76 transitions. [2021-05-02 20:36:16,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-05-02 20:36:16,405 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 1.9) internal successors, (19), 9 states have internal predecessors, (19), 3 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) Word has length 39 [2021-05-02 20:36:16,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 20:36:16,407 INFO L225 Difference]: With dead ends: 61 [2021-05-02 20:36:16,407 INFO L226 Difference]: Without dead ends: 60 [2021-05-02 20:36:16,407 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 90.8ms TimeCoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2021-05-02 20:36:16,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2021-05-02 20:36:16,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 54. [2021-05-02 20:36:16,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 33 states have (on average 1.1515151515151516) internal successors, (38), 36 states have internal predecessors, (38), 15 states have call successors, (15), 6 states have call predecessors, (15), 5 states have return successors, (14), 11 states have call predecessors, (14), 14 states have call successors, (14) [2021-05-02 20:36:16,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 67 transitions. [2021-05-02 20:36:16,423 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 67 transitions. Word has length 39 [2021-05-02 20:36:16,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 20:36:16,424 INFO L480 AbstractCegarLoop]: Abstraction has 54 states and 67 transitions. [2021-05-02 20:36:16,424 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 10 states have (on average 1.9) internal successors, (19), 9 states have internal predecessors, (19), 3 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2021-05-02 20:36:16,424 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 67 transitions. [2021-05-02 20:36:16,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-05-02 20:36:16,427 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 20:36:16,427 INFO L523 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 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] [2021-05-02 20:36:16,627 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 20:36:16,628 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 20:36:16,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 20:36:16,628 INFO L82 PathProgramCache]: Analyzing trace with hash -2009827732, now seen corresponding path program 1 times [2021-05-02 20:36:16,628 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 20:36:16,629 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918262322] [2021-05-02 20:36:16,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 20:36:16,638 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 20:36:16,638 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [25548376] [2021-05-02 20:36:16,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 20:36:16,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 20:36:16,687 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 26 conjunts are in the unsatisfiable core [2021-05-02 20:36:16,689 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 20:36:16,740 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:16,742 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:16,760 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:16,761 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:16,782 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:16,784 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:16,806 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:16,808 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:16,827 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:16,828 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:16,856 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:16,857 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:16,859 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:16,861 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:16,862 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:16,876 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:16,878 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:16,921 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:16,923 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:16,925 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:16,927 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:16,929 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:18,965 WARN L205 SmtUtils]: Spent 2.01 s on a formula simplification that was a NOOP. DAG size: 27 [2021-05-02 20:36:18,966 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:18,974 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:18,976 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:18,978 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:18,979 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:18,980 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:18,982 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:18,983 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:18,985 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:18,986 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:18,990 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:18,993 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:19,002 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:19,003 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:19,005 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:19,007 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:19,008 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:19,010 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:19,013 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:19,017 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:19,021 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:19,023 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:19,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:19,051 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:19,053 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:19,056 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:19,058 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:19,062 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:19,063 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:19,066 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:19,067 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:19,091 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 3 proven. 15 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-05-02 20:36:19,091 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 20:36:19,091 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918262322] [2021-05-02 20:36:19,091 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 20:36:19,091 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [25548376] [2021-05-02 20:36:19,091 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [25548376] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 20:36:19,091 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 20:36:19,091 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2021-05-02 20:36:19,091 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212981664] [2021-05-02 20:36:19,092 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-05-02 20:36:19,092 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 20:36:19,092 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-05-02 20:36:19,092 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-05-02 20:36:19,092 INFO L87 Difference]: Start difference. First operand 54 states and 67 transitions. Second operand has 12 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 11 states have internal predecessors, (25), 5 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 4 states have call successors, (7) [2021-05-02 20:36:21,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 20:36:21,420 INFO L93 Difference]: Finished difference Result 81 states and 99 transitions. [2021-05-02 20:36:21,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-05-02 20:36:21,421 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 11 states have internal predecessors, (25), 5 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 4 states have call successors, (7) Word has length 47 [2021-05-02 20:36:21,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 20:36:21,423 INFO L225 Difference]: With dead ends: 81 [2021-05-02 20:36:21,424 INFO L226 Difference]: Without dead ends: 81 [2021-05-02 20:36:21,426 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 2137.5ms TimeCoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2021-05-02 20:36:21,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2021-05-02 20:36:21,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 75. [2021-05-02 20:36:21,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 47 states have (on average 1.148936170212766) internal successors, (54), 52 states have internal predecessors, (54), 20 states have call successors, (20), 8 states have call predecessors, (20), 7 states have return successors, (19), 14 states have call predecessors, (19), 19 states have call successors, (19) [2021-05-02 20:36:21,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 93 transitions. [2021-05-02 20:36:21,442 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 93 transitions. Word has length 47 [2021-05-02 20:36:21,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 20:36:21,442 INFO L480 AbstractCegarLoop]: Abstraction has 75 states and 93 transitions. [2021-05-02 20:36:21,442 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 11 states have internal predecessors, (25), 5 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 4 states have call successors, (7) [2021-05-02 20:36:21,442 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 93 transitions. [2021-05-02 20:36:21,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-05-02 20:36:21,443 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 20:36:21,443 INFO L523 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 20:36:21,643 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 20:36:21,647 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 20:36:21,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 20:36:21,647 INFO L82 PathProgramCache]: Analyzing trace with hash 2016182430, now seen corresponding path program 2 times [2021-05-02 20:36:21,647 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 20:36:21,647 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2130541213] [2021-05-02 20:36:21,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 20:36:21,656 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 20:36:21,656 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [111173177] [2021-05-02 20:36:21,657 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 20:36:21,701 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 20:36:21,701 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 20:36:21,702 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 33 conjunts are in the unsatisfiable core [2021-05-02 20:36:21,704 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 20:36:21,729 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:21,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:21,736 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:21,737 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:21,744 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:21,745 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:21,761 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:21,762 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:21,801 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:21,804 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:21,844 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:21,846 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:21,885 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:21,888 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:21,912 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 7 proven. 21 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-05-02 20:36:21,912 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 20:36:21,912 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2130541213] [2021-05-02 20:36:21,912 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 20:36:21,912 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [111173177] [2021-05-02 20:36:21,912 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [111173177] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 20:36:21,912 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 20:36:21,913 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2021-05-02 20:36:21,913 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296462796] [2021-05-02 20:36:21,913 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-05-02 20:36:21,913 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 20:36:21,913 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-05-02 20:36:21,913 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2021-05-02 20:36:21,914 INFO L87 Difference]: Start difference. First operand 75 states and 93 transitions. Second operand has 13 states, 13 states have (on average 2.076923076923077) internal successors, (27), 12 states have internal predecessors, (27), 6 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (8), 4 states have call predecessors, (8), 5 states have call successors, (8) [2021-05-02 20:36:24,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 20:36:24,210 INFO L93 Difference]: Finished difference Result 102 states and 125 transitions. [2021-05-02 20:36:24,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-05-02 20:36:24,211 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.076923076923077) internal successors, (27), 12 states have internal predecessors, (27), 6 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (8), 4 states have call predecessors, (8), 5 states have call successors, (8) Word has length 54 [2021-05-02 20:36:24,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 20:36:24,212 INFO L225 Difference]: With dead ends: 102 [2021-05-02 20:36:24,212 INFO L226 Difference]: Without dead ends: 102 [2021-05-02 20:36:24,212 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 119.1ms TimeCoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2021-05-02 20:36:24,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2021-05-02 20:36:24,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 96. [2021-05-02 20:36:24,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 61 states have (on average 1.1475409836065573) internal successors, (70), 68 states have internal predecessors, (70), 25 states have call successors, (25), 10 states have call predecessors, (25), 9 states have return successors, (24), 17 states have call predecessors, (24), 24 states have call successors, (24) [2021-05-02 20:36:24,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 119 transitions. [2021-05-02 20:36:24,218 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 119 transitions. Word has length 54 [2021-05-02 20:36:24,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 20:36:24,219 INFO L480 AbstractCegarLoop]: Abstraction has 96 states and 119 transitions. [2021-05-02 20:36:24,219 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 2.076923076923077) internal successors, (27), 12 states have internal predecessors, (27), 6 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (8), 4 states have call predecessors, (8), 5 states have call successors, (8) [2021-05-02 20:36:24,219 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 119 transitions. [2021-05-02 20:36:24,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-05-02 20:36:24,220 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 20:36:24,220 INFO L523 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 20:36:24,437 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 20:36:24,437 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 20:36:24,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 20:36:24,437 INFO L82 PathProgramCache]: Analyzing trace with hash 921696812, now seen corresponding path program 3 times [2021-05-02 20:36:24,438 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 20:36:24,438 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23085479] [2021-05-02 20:36:24,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 20:36:24,459 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 20:36:24,459 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [87490338] [2021-05-02 20:36:24,459 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 20:36:24,550 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-05-02 20:36:24,550 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 20:36:24,551 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 35 conjunts are in the unsatisfiable core [2021-05-02 20:36:24,553 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 20:36:24,562 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:24,563 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:24,564 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:24,565 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:24,569 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:24,569 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:24,571 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:24,572 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:24,572 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:24,573 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:24,577 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:24,614 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:24,615 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:24,623 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:24,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:24,626 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:24,628 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:24,640 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:24,643 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:24,646 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:24,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:24,649 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:24,652 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:24,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:24,672 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:24,675 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:24,677 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:24,678 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:24,680 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:24,695 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:24,697 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:24,699 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:24,701 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:24,702 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:24,704 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:24,705 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:24,706 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:24,708 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:24,710 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:24,711 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:24,713 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:24,721 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:24,722 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:24,723 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:24,725 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:24,726 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:24,727 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:24,729 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:24,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:24,732 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:24,733 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:24,735 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:24,736 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:24,737 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:24,739 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:24,740 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:24,744 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:24,746 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:24,754 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:24,755 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:24,757 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:24,758 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:24,760 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:24,762 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:24,763 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:24,765 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:24,766 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:24,768 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:24,769 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:24,770 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:24,772 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:24,773 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:24,775 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:24,776 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:24,778 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:24,787 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:24,788 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:24,791 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:24,793 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:24,795 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:24,851 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:24,853 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:24,858 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:24,861 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:24,862 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:24,864 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:24,866 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:24,868 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:24,870 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:24,871 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:24,875 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:24,879 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:24,883 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:24,884 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:24,931 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 26 proven. 11 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-05-02 20:36:24,931 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 20:36:24,931 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [23085479] [2021-05-02 20:36:24,931 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 20:36:24,931 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [87490338] [2021-05-02 20:36:24,931 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [87490338] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 20:36:24,931 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 20:36:24,931 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2021-05-02 20:36:24,931 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895573693] [2021-05-02 20:36:24,932 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-05-02 20:36:24,932 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 20:36:24,932 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-05-02 20:36:24,932 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2021-05-02 20:36:24,932 INFO L87 Difference]: Start difference. First operand 96 states and 119 transitions. Second operand has 13 states, 13 states have (on average 2.0) internal successors, (26), 11 states have internal predecessors, (26), 5 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2021-05-02 20:36:41,159 WARN L205 SmtUtils]: Spent 11.10 s on a formula simplification. DAG size of input: 43 DAG size of output: 39 [2021-05-02 20:36:49,798 WARN L205 SmtUtils]: Spent 8.53 s on a formula simplification that was a NOOP. DAG size: 38 [2021-05-02 20:36:58,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 20:36:58,899 INFO L93 Difference]: Finished difference Result 165 states and 203 transitions. [2021-05-02 20:36:58,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-05-02 20:36:58,904 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.0) internal successors, (26), 11 states have internal predecessors, (26), 5 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 61 [2021-05-02 20:36:58,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 20:36:58,905 INFO L225 Difference]: With dead ends: 165 [2021-05-02 20:36:58,905 INFO L226 Difference]: Without dead ends: 165 [2021-05-02 20:36:58,905 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 22905.6ms TimeCoverageRelationStatistics Valid=93, Invalid=458, Unknown=1, NotChecked=0, Total=552 [2021-05-02 20:36:58,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2021-05-02 20:36:58,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 165. [2021-05-02 20:36:58,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 108 states have (on average 1.1481481481481481) internal successors, (124), 119 states have internal predecessors, (124), 40 states have call successors, (40), 17 states have call predecessors, (40), 16 states have return successors, (39), 28 states have call predecessors, (39), 39 states have call successors, (39) [2021-05-02 20:36:58,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 203 transitions. [2021-05-02 20:36:58,927 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 203 transitions. Word has length 61 [2021-05-02 20:36:58,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 20:36:58,927 INFO L480 AbstractCegarLoop]: Abstraction has 165 states and 203 transitions. [2021-05-02 20:36:58,927 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 2.0) internal successors, (26), 11 states have internal predecessors, (26), 5 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2021-05-02 20:36:58,927 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 203 transitions. [2021-05-02 20:36:58,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-05-02 20:36:58,942 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 20:36:58,942 INFO L523 BasicCegarLoop]: trace histogram [7, 6, 6, 4, 4, 4, 4, 4, 4, 3, 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] [2021-05-02 20:36:59,143 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-05-02 20:36:59,143 INFO L428 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 20:36:59,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 20:36:59,144 INFO L82 PathProgramCache]: Analyzing trace with hash -1148557238, now seen corresponding path program 1 times [2021-05-02 20:36:59,144 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 20:36:59,144 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357590954] [2021-05-02 20:36:59,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 20:36:59,150 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 20:36:59,151 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1540820276] [2021-05-02 20:36:59,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 20:36:59,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 20:36:59,244 INFO L263 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 21 conjunts are in the unsatisfiable core [2021-05-02 20:36:59,250 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 20:36:59,278 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:59,279 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:59,296 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:59,297 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:59,305 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:59,306 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:59,331 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:59,333 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:59,344 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:59,346 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:59,349 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:59,350 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:59,621 WARN L205 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2021-05-02 20:36:59,622 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:59,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:59,625 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:59,627 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:59,628 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:59,630 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:59,630 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:59,632 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:59,632 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:59,639 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:59,640 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:59,641 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:59,643 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:59,644 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:59,646 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:59,647 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:59,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:59,650 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:59,651 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:59,652 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:59,654 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:59,655 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:59,657 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:59,658 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:59,659 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:59,659 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:59,660 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:59,661 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:59,668 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:59,669 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:59,670 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:59,672 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:59,673 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:59,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:59,675 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:59,677 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:59,677 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:59,680 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:59,681 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:59,682 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:59,695 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:59,696 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:59,697 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:59,699 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:59,700 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:59,702 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:59,702 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:59,703 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:59,704 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:59,710 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:59,711 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:59,712 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:59,714 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:59,715 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:59,716 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:59,717 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:59,719 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:59,719 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:59,721 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:59,723 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:36:59,724 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:37:00,361 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:37:00,362 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:37:00,363 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:37:00,365 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:37:00,366 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:37:00,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:37:00,369 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:37:00,375 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:37:00,376 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:37:00,377 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:37:00,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:37:00,380 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:37:00,381 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:37:00,382 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:37:00,383 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:37:00,384 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:37:00,421 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 52 proven. 15 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2021-05-02 20:37:00,421 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 20:37:00,421 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [357590954] [2021-05-02 20:37:00,421 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 20:37:00,421 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1540820276] [2021-05-02 20:37:00,421 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1540820276] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 20:37:00,421 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 20:37:00,421 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2021-05-02 20:37:00,421 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267250855] [2021-05-02 20:37:00,422 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-02 20:37:00,422 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 20:37:00,422 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-02 20:37:00,422 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=68, Unknown=1, NotChecked=0, Total=90 [2021-05-02 20:37:00,422 INFO L87 Difference]: Start difference. First operand 165 states and 203 transitions. Second operand has 10 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 8 states have internal predecessors, (31), 8 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 8 states have call predecessors, (11), 8 states have call successors, (11) [2021-05-02 20:37:32,853 WARN L205 SmtUtils]: Spent 750.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2021-05-02 20:37:32,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 20:37:32,893 INFO L93 Difference]: Finished difference Result 263 states and 353 transitions. [2021-05-02 20:37:32,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-05-02 20:37:32,894 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 8 states have internal predecessors, (31), 8 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 8 states have call predecessors, (11), 8 states have call successors, (11) Word has length 75 [2021-05-02 20:37:32,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 20:37:32,896 INFO L225 Difference]: With dead ends: 263 [2021-05-02 20:37:32,896 INFO L226 Difference]: Without dead ends: 263 [2021-05-02 20:37:32,896 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 2158.9ms TimeCoverageRelationStatistics Valid=55, Invalid=183, Unknown=2, NotChecked=0, Total=240 [2021-05-02 20:37:32,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2021-05-02 20:37:32,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 196. [2021-05-02 20:37:32,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 129 states have (on average 1.1627906976744187) internal successors, (150), 137 states have internal predecessors, (150), 52 states have call successors, (52), 15 states have call predecessors, (52), 14 states have return successors, (51), 43 states have call predecessors, (51), 51 states have call successors, (51) [2021-05-02 20:37:32,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 253 transitions. [2021-05-02 20:37:32,910 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 253 transitions. Word has length 75 [2021-05-02 20:37:32,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 20:37:32,910 INFO L480 AbstractCegarLoop]: Abstraction has 196 states and 253 transitions. [2021-05-02 20:37:32,910 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 8 states have internal predecessors, (31), 8 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 8 states have call predecessors, (11), 8 states have call successors, (11) [2021-05-02 20:37:32,910 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 253 transitions. [2021-05-02 20:37:32,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-05-02 20:37:32,912 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 20:37:32,912 INFO L523 BasicCegarLoop]: trace histogram [9, 8, 8, 5, 5, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 20:37:33,121 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 20:37:33,121 INFO L428 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 20:37:33,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 20:37:33,121 INFO L82 PathProgramCache]: Analyzing trace with hash -2045268700, now seen corresponding path program 1 times [2021-05-02 20:37:33,121 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 20:37:33,122 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918247286] [2021-05-02 20:37:33,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 20:37:33,128 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 20:37:33,128 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2003719985] [2021-05-02 20:37:33,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 20:37:33,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 20:37:33,215 INFO L263 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 14 conjunts are in the unsatisfiable core [2021-05-02 20:37:33,218 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 20:37:33,243 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:37:33,244 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:37:33,251 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:37:33,252 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:37:33,258 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:37:33,259 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:37:33,266 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:37:33,268 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:37:33,270 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:37:33,271 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:37:33,280 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:37:33,281 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:37:33,282 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:37:33,283 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:37:33,284 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:37:33,286 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:37:33,286 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:37:33,287 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:37:33,288 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:37:33,293 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:37:33,294 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:37:33,296 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:37:33,297 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:37:33,298 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:37:33,299 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:37:33,300 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:37:33,301 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:37:33,302 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:37:33,303 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:37:33,304 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:37:33,305 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:37:33,306 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:37:33,308 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:37:33,309 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:37:33,310 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:37:33,311 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:37:33,312 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:37:33,312 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:37:33,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:37:33,319 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:37:33,320 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:37:33,321 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:37:33,322 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:37:33,323 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:37:33,324 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:37:33,325 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:37:33,326 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:37:33,327 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:37:33,328 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:37:33,329 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:37:33,330 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:37:33,332 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:37:33,333 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:37:33,334 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:37:33,334 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:37:33,335 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:37:33,336 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:37:33,341 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:37:33,342 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:37:33,344 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:37:33,345 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:37:33,346 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:37:33,347 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:37:33,349 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:37:33,350 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:37:33,351 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:37:33,352 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:37:33,364 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:37:33,365 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:37:33,366 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:37:33,368 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:37:33,369 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:37:33,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:37:33,372 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:37:33,373 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:37:33,373 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:37:33,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:37:33,380 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:37:33,385 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:37:33,387 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:37:33,387 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:37:33,388 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:37:33,389 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:37:33,390 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:37:33,392 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:37:33,393 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:37:33,394 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:37:33,395 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:37:33,396 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:37:33,413 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:37:33,414 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:37:33,416 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:37:33,416 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:37:33,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:37:33,418 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:37:33,423 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:37:33,425 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:37:33,426 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:37:33,427 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:37:33,428 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:37:33,429 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:37:33,430 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:37:33,431 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:37:33,432 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:37:33,433 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:37:33,434 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:37:33,435 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:37:33,436 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:37:33,437 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:37:33,438 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:37:33,439 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:37:33,439 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:37:33,440 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:37:33,441 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:37:33,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:37:33,448 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:37:33,449 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:37:33,450 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:37:33,451 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:37:33,452 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:37:33,453 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:37:33,454 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:37:33,454 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:37:33,457 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:37:33,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:37:33,459 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:37:33,471 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:37:33,472 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:37:33,475 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:37:33,477 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:37:33,478 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:37:33,479 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:37:33,480 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:37:33,481 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:37:33,481 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:37:33,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:37:33,489 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:37:33,490 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:37:33,491 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:37:33,492 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:37:33,494 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:37:33,494 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:37:33,495 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:37:33,496 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:37:33,497 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:37:33,498 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:37:33,499 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:37:33,510 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:37:33,511 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:37:33,513 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:37:33,514 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:37:33,515 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:37:33,516 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:37:33,517 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:37:33,523 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:37:33,524 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:37:33,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:37:33,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:37:33,527 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:37:33,530 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:37:33,531 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:37:33,532 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:37:33,532 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:37:33,539 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 27 proven. 30 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2021-05-02 20:37:33,539 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 20:37:33,539 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918247286] [2021-05-02 20:37:33,539 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 20:37:33,539 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2003719985] [2021-05-02 20:37:33,539 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2003719985] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 20:37:33,539 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 20:37:33,539 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2021-05-02 20:37:33,539 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919044598] [2021-05-02 20:37:33,541 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-02 20:37:33,541 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 20:37:33,542 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-02 20:37:33,542 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-05-02 20:37:33,542 INFO L87 Difference]: Start difference. First operand 196 states and 253 transitions. Second operand has 9 states, 9 states have (on average 3.7777777777777777) internal successors, (34), 9 states have internal predecessors, (34), 7 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 6 states have call predecessors, (13), 6 states have call successors, (13) [2021-05-02 20:37:34,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 20:37:34,077 INFO L93 Difference]: Finished difference Result 227 states and 296 transitions. [2021-05-02 20:37:34,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-05-02 20:37:34,077 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.7777777777777777) internal successors, (34), 9 states have internal predecessors, (34), 7 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 6 states have call predecessors, (13), 6 states have call successors, (13) Word has length 89 [2021-05-02 20:37:34,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 20:37:34,078 INFO L225 Difference]: With dead ends: 227 [2021-05-02 20:37:34,079 INFO L226 Difference]: Without dead ends: 227 [2021-05-02 20:37:34,079 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 158.6ms TimeCoverageRelationStatistics Valid=65, Invalid=207, Unknown=0, NotChecked=0, Total=272 [2021-05-02 20:37:34,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2021-05-02 20:37:34,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 198. [2021-05-02 20:37:34,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 131 states have (on average 1.1603053435114503) internal successors, (152), 137 states have internal predecessors, (152), 52 states have call successors, (52), 15 states have call predecessors, (52), 14 states have return successors, (51), 45 states have call predecessors, (51), 51 states have call successors, (51) [2021-05-02 20:37:34,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 255 transitions. [2021-05-02 20:37:34,094 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 255 transitions. Word has length 89 [2021-05-02 20:37:34,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 20:37:34,094 INFO L480 AbstractCegarLoop]: Abstraction has 198 states and 255 transitions. [2021-05-02 20:37:34,095 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 3.7777777777777777) internal successors, (34), 9 states have internal predecessors, (34), 7 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 6 states have call predecessors, (13), 6 states have call successors, (13) [2021-05-02 20:37:34,095 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 255 transitions. [2021-05-02 20:37:34,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-05-02 20:37:34,096 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 20:37:34,096 INFO L523 BasicCegarLoop]: trace histogram [9, 8, 8, 5, 5, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 20:37:34,297 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 20:37:34,297 INFO L428 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 20:37:34,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 20:37:34,298 INFO L82 PathProgramCache]: Analyzing trace with hash -1914671820, now seen corresponding path program 2 times [2021-05-02 20:37:34,298 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 20:37:34,298 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512436992] [2021-05-02 20:37:34,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 20:37:34,304 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 20:37:34,304 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1677414383] [2021-05-02 20:37:34,304 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 20:37:34,379 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 20:37:34,379 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 20:37:34,380 INFO L263 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 4 conjunts are in the unsatisfiable core [2021-05-02 20:37:34,381 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 20:37:34,416 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:37:34,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:37:34,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:37:34,425 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:37:34,432 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:37:34,433 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:37:34,438 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:37:34,439 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:37:34,463 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:37:34,464 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:37:34,470 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:37:34,471 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:37:34,499 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 94 proven. 3 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2021-05-02 20:37:34,499 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 20:37:34,499 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512436992] [2021-05-02 20:37:34,499 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 20:37:34,500 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1677414383] [2021-05-02 20:37:34,500 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1677414383] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 20:37:34,500 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 20:37:34,500 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2021-05-02 20:37:34,500 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887221591] [2021-05-02 20:37:34,501 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-05-02 20:37:34,501 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 20:37:34,501 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-05-02 20:37:34,501 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-05-02 20:37:34,501 INFO L87 Difference]: Start difference. First operand 198 states and 255 transitions. Second operand has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 4 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2021-05-02 20:37:34,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 20:37:34,529 INFO L93 Difference]: Finished difference Result 204 states and 259 transitions. [2021-05-02 20:37:34,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-05-02 20:37:34,529 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 4 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) Word has length 89 [2021-05-02 20:37:34,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 20:37:34,531 INFO L225 Difference]: With dead ends: 204 [2021-05-02 20:37:34,531 INFO L226 Difference]: Without dead ends: 141 [2021-05-02 20:37:34,531 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.9ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-05-02 20:37:34,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2021-05-02 20:37:34,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 139. [2021-05-02 20:37:34,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 93 states have (on average 1.086021505376344) internal successors, (101), 95 states have internal predecessors, (101), 31 states have call successors, (31), 15 states have call predecessors, (31), 14 states have return successors, (30), 28 states have call predecessors, (30), 30 states have call successors, (30) [2021-05-02 20:37:34,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 162 transitions. [2021-05-02 20:37:34,549 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 162 transitions. Word has length 89 [2021-05-02 20:37:34,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 20:37:34,550 INFO L480 AbstractCegarLoop]: Abstraction has 139 states and 162 transitions. [2021-05-02 20:37:34,550 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 4 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2021-05-02 20:37:34,550 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 162 transitions. [2021-05-02 20:37:34,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-05-02 20:37:34,552 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 20:37:34,552 INFO L523 BasicCegarLoop]: trace histogram [9, 8, 8, 5, 5, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 20:37:34,759 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2021-05-02 20:37:34,759 INFO L428 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 20:37:34,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 20:37:34,760 INFO L82 PathProgramCache]: Analyzing trace with hash -842490076, now seen corresponding path program 3 times [2021-05-02 20:37:34,760 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 20:37:34,760 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1978465330] [2021-05-02 20:37:34,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 20:37:34,769 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 20:37:34,769 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [91552506] [2021-05-02 20:37:34,769 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 20:37:34,822 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-05-02 20:37:34,822 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 20:37:34,823 INFO L263 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 19 conjunts are in the unsatisfiable core [2021-05-02 20:37:34,824 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 20:37:34,913 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:37:34,914 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:37:34,926 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:37:34,928 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:37:34,942 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 49 proven. 4 refuted. 0 times theorem prover too weak. 131 trivial. 0 not checked. [2021-05-02 20:37:34,942 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 20:37:34,942 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1978465330] [2021-05-02 20:37:34,942 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 20:37:34,942 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [91552506] [2021-05-02 20:37:34,942 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [91552506] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 20:37:34,942 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 20:37:34,942 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-05-02 20:37:34,942 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832897212] [2021-05-02 20:37:34,942 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-05-02 20:37:34,943 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 20:37:34,943 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-05-02 20:37:34,943 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-05-02 20:37:34,943 INFO L87 Difference]: Start difference. First operand 139 states and 162 transitions. Second operand has 7 states, 7 states have (on average 4.0) internal successors, (28), 6 states have internal predecessors, (28), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-05-02 20:37:49,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 20:37:49,173 INFO L93 Difference]: Finished difference Result 151 states and 171 transitions. [2021-05-02 20:37:49,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-05-02 20:37:49,173 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.0) internal successors, (28), 6 states have internal predecessors, (28), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 89 [2021-05-02 20:37:49,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 20:37:49,174 INFO L225 Difference]: With dead ends: 151 [2021-05-02 20:37:49,174 INFO L226 Difference]: Without dead ends: 151 [2021-05-02 20:37:49,174 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 28.7ms TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-05-02 20:37:49,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2021-05-02 20:37:49,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 151. [2021-05-02 20:37:49,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 102 states have (on average 1.0784313725490196) internal successors, (110), 104 states have internal predecessors, (110), 31 states have call successors, (31), 18 states have call predecessors, (31), 17 states have return successors, (30), 28 states have call predecessors, (30), 30 states have call successors, (30) [2021-05-02 20:37:49,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 171 transitions. [2021-05-02 20:37:49,178 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 171 transitions. Word has length 89 [2021-05-02 20:37:49,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 20:37:49,179 INFO L480 AbstractCegarLoop]: Abstraction has 151 states and 171 transitions. [2021-05-02 20:37:49,179 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 4.0) internal successors, (28), 6 states have internal predecessors, (28), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-05-02 20:37:49,179 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 171 transitions. [2021-05-02 20:37:49,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-05-02 20:37:49,180 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 20:37:49,180 INFO L523 BasicCegarLoop]: trace histogram [11, 10, 10, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 20:37:49,388 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 20:37:49,389 INFO L428 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 20:37:49,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 20:37:49,389 INFO L82 PathProgramCache]: Analyzing trace with hash 352516930, now seen corresponding path program 4 times [2021-05-02 20:37:49,389 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 20:37:49,389 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [975765891] [2021-05-02 20:37:49,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 20:37:49,396 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 20:37:49,396 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [763585323] [2021-05-02 20:37:49,396 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 20:37:49,443 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 20:37:49,443 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 20:37:49,444 INFO L263 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 34 conjunts are in the unsatisfiable core [2021-05-02 20:37:49,445 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 20:37:49,467 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:37:49,468 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:37:49,474 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:37:49,475 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:37:49,491 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:37:49,492 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:08,285 WARN L205 SmtUtils]: Spent 18.78 s on a formula simplification. DAG size of input: 22 DAG size of output: 16 [2021-05-02 20:38:08,287 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:08,289 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:08,292 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:08,293 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:08,323 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:08,343 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:08,345 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:08,347 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:08,348 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:08,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:08,358 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:08,381 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:08,382 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:08,383 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:08,385 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:08,386 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:08,387 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:08,389 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:08,390 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:08,391 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:08,393 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:08,394 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:08,395 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:08,396 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:08,397 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:08,398 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:08,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:08,419 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:08,425 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:08,426 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:08,428 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:08,429 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:08,430 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:08,432 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:08,434 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:08,435 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:08,449 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:08,450 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:11,691 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:11,694 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:11,696 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:11,697 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:11,699 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:11,703 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:11,703 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:11,705 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:11,706 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:11,713 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:11,715 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:11,716 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:11,718 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:11,719 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:11,721 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:11,723 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:11,725 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:11,727 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:11,728 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:11,755 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:11,756 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:11,758 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:11,759 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:11,761 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:11,762 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:11,762 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:11,764 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:11,765 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:11,766 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:11,767 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:11,774 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:11,775 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:11,776 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:11,778 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:11,779 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:11,780 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:11,781 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:11,782 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:11,784 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:11,785 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:11,786 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:11,787 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:11,788 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:11,790 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:11,791 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:11,794 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:11,794 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:11,795 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:11,796 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:11,796 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:11,797 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:11,804 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:11,805 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:11,806 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:11,808 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:11,809 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:11,810 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:11,812 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:11,814 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:11,815 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:11,816 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:11,847 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:11,849 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:11,850 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:11,851 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:11,852 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:11,854 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:11,856 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:11,857 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:11,858 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:11,866 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:11,867 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:11,868 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:11,870 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:11,871 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:11,872 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:11,873 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:11,874 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:11,876 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:11,877 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:11,878 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:11,879 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:11,880 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:11,882 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:11,883 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:11,886 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:11,886 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:11,887 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:11,888 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:11,895 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:11,896 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:11,897 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:11,899 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:11,900 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:11,901 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:11,902 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:11,903 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:11,904 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:11,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:11,906 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:11,907 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:11,909 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:11,910 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:11,911 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:11,914 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:11,914 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:11,931 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:11,932 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:11,939 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:11,940 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:11,941 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:11,943 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:11,944 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:11,945 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:11,947 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:11,950 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:11,951 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:11,953 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:12,347 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:12,348 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:12,349 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:12,350 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:12,352 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:12,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:12,356 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:12,362 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:12,363 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:12,365 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:12,366 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:12,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:12,368 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:12,369 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:12,370 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:12,372 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:12,373 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:12,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:12,375 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:12,376 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:12,378 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:12,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:12,382 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:12,383 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:12,389 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:12,390 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:12,391 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:12,393 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:12,394 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:12,395 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:12,396 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:12,397 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:12,399 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:12,400 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:12,405 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 32 proven. 45 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2021-05-02 20:38:12,405 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 20:38:12,405 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [975765891] [2021-05-02 20:38:12,405 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 20:38:12,405 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [763585323] [2021-05-02 20:38:12,405 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [763585323] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 20:38:12,405 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 20:38:12,405 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2021-05-02 20:38:12,405 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966056852] [2021-05-02 20:38:12,406 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-05-02 20:38:12,406 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 20:38:12,406 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-05-02 20:38:12,406 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=102, Unknown=1, NotChecked=0, Total=132 [2021-05-02 20:38:12,406 INFO L87 Difference]: Start difference. First operand 151 states and 171 transitions. Second operand has 12 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 9 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 9 states have call predecessors, (15), 8 states have call successors, (15) [2021-05-02 20:38:23,526 WARN L205 SmtUtils]: Spent 11.05 s on a formula simplification that was a NOOP. DAG size: 26 [2021-05-02 20:38:38,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 20:38:38,758 INFO L93 Difference]: Finished difference Result 182 states and 214 transitions. [2021-05-02 20:38:38,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-05-02 20:38:38,759 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 9 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 9 states have call predecessors, (15), 8 states have call successors, (15) Word has length 103 [2021-05-02 20:38:38,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 20:38:38,760 INFO L225 Difference]: With dead ends: 182 [2021-05-02 20:38:38,760 INFO L226 Difference]: Without dead ends: 179 [2021-05-02 20:38:38,760 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 91 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 33672.3ms TimeCoverageRelationStatistics Valid=51, Invalid=188, Unknown=1, NotChecked=0, Total=240 [2021-05-02 20:38:38,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2021-05-02 20:38:38,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 163. [2021-05-02 20:38:38,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 110 states have (on average 1.0727272727272728) internal successors, (118), 112 states have internal predecessors, (118), 35 states have call successors, (35), 18 states have call predecessors, (35), 17 states have return successors, (34), 32 states have call predecessors, (34), 34 states have call successors, (34) [2021-05-02 20:38:38,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 187 transitions. [2021-05-02 20:38:38,764 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 187 transitions. Word has length 103 [2021-05-02 20:38:38,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 20:38:38,764 INFO L480 AbstractCegarLoop]: Abstraction has 163 states and 187 transitions. [2021-05-02 20:38:38,764 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 12 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 9 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 9 states have call predecessors, (15), 8 states have call successors, (15) [2021-05-02 20:38:38,765 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 187 transitions. [2021-05-02 20:38:38,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-05-02 20:38:38,765 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 20:38:38,765 INFO L523 BasicCegarLoop]: trace histogram [12, 11, 11, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 20:38:38,980 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 20:38:38,980 INFO L428 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 20:38:38,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 20:38:38,981 INFO L82 PathProgramCache]: Analyzing trace with hash -1553203444, now seen corresponding path program 5 times [2021-05-02 20:38:38,981 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 20:38:38,981 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63742061] [2021-05-02 20:38:38,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 20:38:38,986 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 20:38:38,987 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1459240713] [2021-05-02 20:38:38,987 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 20:38:39,093 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2021-05-02 20:38:39,093 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 20:38:39,095 INFO L263 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 16 conjunts are in the unsatisfiable core [2021-05-02 20:38:39,097 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 20:38:39,136 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:39,137 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:39,146 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:39,147 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:39,154 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:39,155 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:39,162 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:39,163 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:39,165 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:39,166 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:39,176 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:39,177 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:39,210 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:39,211 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:39,212 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:39,213 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:39,214 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:39,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:39,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:39,221 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:39,222 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:39,223 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:39,224 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:39,225 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:39,226 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:39,227 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:39,237 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:39,239 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:39,240 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:39,241 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:39,241 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:39,242 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:39,243 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:39,244 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:39,246 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:39,246 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:39,247 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:39,247 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:39,253 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:39,265 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:39,266 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:39,268 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:39,269 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:39,270 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:39,270 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:39,271 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:39,273 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:39,273 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:39,274 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:39,275 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:39,276 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:39,278 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:39,289 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:39,290 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:39,291 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:39,292 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:39,292 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:39,297 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:39,298 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:39,299 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:39,301 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:39,301 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:39,303 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:39,304 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:39,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:39,320 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:39,321 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:40,002 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:40,004 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:40,005 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:40,007 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:40,008 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:40,009 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:40,010 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:40,011 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:40,011 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:40,026 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:40,027 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:40,028 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:40,030 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:40,031 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:40,032 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:40,034 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:40,035 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:40,037 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:40,040 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:40,056 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:40,057 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:40,058 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:40,059 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:40,060 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:40,061 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:40,061 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:40,062 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:40,063 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:40,068 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:40,069 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:40,070 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:40,072 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:40,081 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:40,082 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:40,083 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:40,084 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:40,085 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:40,086 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:40,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:40,088 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:40,089 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:40,093 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:40,094 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:40,095 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:40,095 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:40,096 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:40,097 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:40,114 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:40,115 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:40,117 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:40,118 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:40,119 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:40,120 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:40,121 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:40,122 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:40,124 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:40,125 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:40,126 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:40,127 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:40,128 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:40,130 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:40,131 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:40,132 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:40,133 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:40,134 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:40,134 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:40,142 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:40,143 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:40,145 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:40,146 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:40,147 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:40,149 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:40,149 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:40,151 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:40,151 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:40,154 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:40,155 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:40,156 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:40,171 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:40,172 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:40,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:40,174 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:40,175 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:40,177 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:40,177 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:40,179 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:40,179 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:40,185 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:40,186 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:40,187 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:40,188 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:40,189 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:40,191 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:40,191 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:40,193 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:40,193 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:40,195 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:40,196 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:40,197 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:40,211 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:40,213 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:40,214 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:40,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:40,216 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:40,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:40,219 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:40,225 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:40,226 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:40,227 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:40,228 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:40,229 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:40,231 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:40,231 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:40,232 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:40,233 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:40,254 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 120 proven. 36 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2021-05-02 20:38:40,254 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 20:38:40,254 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63742061] [2021-05-02 20:38:40,254 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 20:38:40,254 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1459240713] [2021-05-02 20:38:40,254 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1459240713] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 20:38:40,254 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 20:38:40,254 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2021-05-02 20:38:40,255 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994535088] [2021-05-02 20:38:40,255 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-02 20:38:40,255 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 20:38:40,255 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-02 20:38:40,255 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=71, Unknown=1, NotChecked=0, Total=90 [2021-05-02 20:38:40,255 INFO L87 Difference]: Start difference. First operand 163 states and 187 transitions. Second operand has 10 states, 10 states have (on average 4.1) internal successors, (41), 10 states have internal predecessors, (41), 8 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 8 states have call predecessors, (16), 8 states have call successors, (16) [2021-05-02 20:38:46,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 20:38:46,640 INFO L93 Difference]: Finished difference Result 181 states and 212 transitions. [2021-05-02 20:38:46,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-05-02 20:38:46,665 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.1) internal successors, (41), 10 states have internal predecessors, (41), 8 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 8 states have call predecessors, (16), 8 states have call successors, (16) Word has length 110 [2021-05-02 20:38:46,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 20:38:46,667 INFO L225 Difference]: With dead ends: 181 [2021-05-02 20:38:46,667 INFO L226 Difference]: Without dead ends: 181 [2021-05-02 20:38:46,668 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1481.7ms TimeCoverageRelationStatistics Valid=66, Invalid=238, Unknown=2, NotChecked=0, Total=306 [2021-05-02 20:38:46,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2021-05-02 20:38:46,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 166. [2021-05-02 20:38:46,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 112 states have (on average 1.0803571428571428) internal successors, (121), 114 states have internal predecessors, (121), 36 states have call successors, (36), 18 states have call predecessors, (36), 17 states have return successors, (35), 33 states have call predecessors, (35), 35 states have call successors, (35) [2021-05-02 20:38:46,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 192 transitions. [2021-05-02 20:38:46,675 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 192 transitions. Word has length 110 [2021-05-02 20:38:46,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 20:38:46,677 INFO L480 AbstractCegarLoop]: Abstraction has 166 states and 192 transitions. [2021-05-02 20:38:46,677 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 4.1) internal successors, (41), 10 states have internal predecessors, (41), 8 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 8 states have call predecessors, (16), 8 states have call successors, (16) [2021-05-02 20:38:46,677 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 192 transitions. [2021-05-02 20:38:46,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-05-02 20:38:46,678 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 20:38:46,678 INFO L523 BasicCegarLoop]: trace histogram [12, 11, 11, 6, 6, 6, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 20:38:46,881 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-05-02 20:38:46,881 INFO L428 AbstractCegarLoop]: === Iteration 13 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 20:38:46,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 20:38:46,881 INFO L82 PathProgramCache]: Analyzing trace with hash 1431091588, now seen corresponding path program 6 times [2021-05-02 20:38:46,881 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 20:38:46,881 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968054557] [2021-05-02 20:38:46,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 20:38:46,887 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 20:38:46,887 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1820792222] [2021-05-02 20:38:46,887 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 20:38:46,982 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2021-05-02 20:38:46,983 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 20:38:46,983 INFO L263 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 28 conjunts are in the unsatisfiable core [2021-05-02 20:38:46,985 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 20:38:47,105 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:47,106 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:47,115 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:47,116 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:47,140 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:47,141 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:47,142 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:47,143 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:47,144 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:49,166 WARN L860 $PredicateComparison]: unable to prove that (exists ((v_main_~r~0_43 Int) (main_~r~0 Int)) (= (+ (* v_main_~r~0_43 v_main_~r~0_43) (* main_~r~0 main_~r~0) (* 4 c_main_~A~0) (* 2 v_main_~r~0_43) (* 2 main_~r~0) (* 2 c_main_~u~0)) (+ (* c_main_~u~0 c_main_~u~0) (* 2 (* v_main_~r~0_43 main_~r~0))))) is different from true [2021-05-02 20:38:49,167 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:49,168 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:49,170 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:49,175 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:49,175 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:49,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:49,201 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:49,207 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:49,209 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:49,210 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:49,211 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:49,212 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:49,213 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:49,214 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:49,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:49,216 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:49,217 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:49,217 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:49,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:49,220 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:49,221 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:49,222 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:49,223 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:49,224 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:49,230 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:49,231 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:49,232 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:49,233 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:49,234 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:49,249 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:49,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:49,251 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:49,252 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:49,253 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:49,253 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:49,254 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:49,255 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:49,256 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:49,257 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:49,258 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:49,259 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:49,265 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:49,266 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:49,268 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:49,285 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:49,286 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:56,542 WARN L205 SmtUtils]: Spent 2.03 s on a formula simplification that was a NOOP. DAG size: 28 [2021-05-02 20:38:56,545 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:56,546 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:56,571 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:56,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:56,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:58,593 WARN L838 $PredicateComparison]: unable to prove that (and (exists ((v_main_~r~0_43 Int) (v_main_~r~0_44 Int)) (= (+ (* v_main_~r~0_43 v_main_~r~0_43) (* 4 c_main_~A~0) (* 2 v_main_~r~0_43) (* 2 v_main_~r~0_44) (* v_main_~r~0_44 v_main_~r~0_44) (* 6 c_main_~u~0)) (+ (* c_main_~u~0 c_main_~u~0) (* 2 (* v_main_~r~0_43 v_main_~r~0_44)) 8))) (= (+ (* c_main_~u~0 c_main_~u~0) (* 2 c_main_~v~0)) (+ (* c_main_~v~0 c_main_~v~0) (* 4 c_main_~A~0) (* 4 c_main_~r~0) (* 2 c_main_~u~0)))) is different from false [2021-05-02 20:38:58,595 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:58,596 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:58,597 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:58,599 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:58,600 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:58,603 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:58,604 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:58,607 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:58,607 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:38:58,625 INFO L134 CoverageAnalysis]: Checked inductivity of 329 backedges. 103 proven. 14 refuted. 0 times theorem prover too weak. 204 trivial. 8 not checked. [2021-05-02 20:38:58,625 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 20:38:58,625 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968054557] [2021-05-02 20:38:58,625 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 20:38:58,625 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1820792222] [2021-05-02 20:38:58,625 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1820792222] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 20:38:58,625 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 20:38:58,625 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2021-05-02 20:38:58,625 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74278552] [2021-05-02 20:38:58,625 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-02 20:38:58,625 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 20:38:58,626 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-02 20:38:58,626 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=42, Unknown=3, NotChecked=26, Total=90 [2021-05-02 20:38:58,626 INFO L87 Difference]: Start difference. First operand 166 states and 192 transitions. Second operand has 10 states, 10 states have (on average 3.5) internal successors, (35), 8 states have internal predecessors, (35), 4 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 4 states have call predecessors, (13), 3 states have call successors, (13) [2021-05-02 20:39:42,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 20:39:42,325 INFO L93 Difference]: Finished difference Result 187 states and 211 transitions. [2021-05-02 20:39:42,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-02 20:39:42,326 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.5) internal successors, (35), 8 states have internal predecessors, (35), 4 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 4 states have call predecessors, (13), 3 states have call successors, (13) Word has length 110 [2021-05-02 20:39:42,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 20:39:42,326 INFO L225 Difference]: With dead ends: 187 [2021-05-02 20:39:42,327 INFO L226 Difference]: Without dead ends: 187 [2021-05-02 20:39:42,327 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 11327.4ms TimeCoverageRelationStatistics Valid=30, Invalid=65, Unknown=3, NotChecked=34, Total=132 [2021-05-02 20:39:42,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2021-05-02 20:39:42,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 186. [2021-05-02 20:39:42,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 126 states have (on average 1.0714285714285714) internal successors, (135), 130 states have internal predecessors, (135), 38 states have call successors, (38), 22 states have call predecessors, (38), 21 states have return successors, (37), 33 states have call predecessors, (37), 37 states have call successors, (37) [2021-05-02 20:39:42,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 210 transitions. [2021-05-02 20:39:42,331 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 210 transitions. Word has length 110 [2021-05-02 20:39:42,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 20:39:42,331 INFO L480 AbstractCegarLoop]: Abstraction has 186 states and 210 transitions. [2021-05-02 20:39:42,331 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 3.5) internal successors, (35), 8 states have internal predecessors, (35), 4 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 4 states have call predecessors, (13), 3 states have call successors, (13) [2021-05-02 20:39:42,331 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 210 transitions. [2021-05-02 20:39:42,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-05-02 20:39:42,332 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 20:39:42,332 INFO L523 BasicCegarLoop]: trace histogram [13, 12, 12, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 20:39:42,540 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-05-02 20:39:42,541 INFO L428 AbstractCegarLoop]: === Iteration 14 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 20:39:42,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 20:39:42,541 INFO L82 PathProgramCache]: Analyzing trace with hash 613679210, now seen corresponding path program 7 times [2021-05-02 20:39:42,542 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 20:39:42,542 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [94668722] [2021-05-02 20:39:42,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 20:39:42,548 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 20:39:42,548 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1435956952] [2021-05-02 20:39:42,548 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 20:39:42,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 20:39:42,617 INFO L263 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 9 conjunts are in the unsatisfiable core [2021-05-02 20:39:42,619 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 20:39:42,684 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:42,685 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:42,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:42,691 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:42,699 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:42,700 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:42,717 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:42,718 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:42,723 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:42,724 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:42,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:42,732 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:42,739 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:42,740 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:42,749 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:42,750 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:42,761 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:42,761 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:42,769 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:42,770 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:42,778 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:42,779 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:42,791 INFO L134 CoverageAnalysis]: Checked inductivity of 386 backedges. 71 proven. 18 refuted. 0 times theorem prover too weak. 297 trivial. 0 not checked. [2021-05-02 20:39:42,791 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 20:39:42,791 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [94668722] [2021-05-02 20:39:42,791 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 20:39:42,791 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1435956952] [2021-05-02 20:39:42,791 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1435956952] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 20:39:42,791 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 20:39:42,791 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2021-05-02 20:39:42,791 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393916015] [2021-05-02 20:39:42,792 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-05-02 20:39:42,792 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 20:39:42,792 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-05-02 20:39:42,792 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-05-02 20:39:42,792 INFO L87 Difference]: Start difference. First operand 186 states and 210 transitions. Second operand has 6 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 6 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 5 states have call predecessors, (15), 5 states have call successors, (15) [2021-05-02 20:39:42,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 20:39:42,886 INFO L93 Difference]: Finished difference Result 202 states and 234 transitions. [2021-05-02 20:39:42,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-05-02 20:39:42,886 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 6 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 5 states have call predecessors, (15), 5 states have call successors, (15) Word has length 117 [2021-05-02 20:39:42,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 20:39:42,887 INFO L225 Difference]: With dead ends: 202 [2021-05-02 20:39:42,887 INFO L226 Difference]: Without dead ends: 202 [2021-05-02 20:39:42,888 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 31.1ms TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-05-02 20:39:42,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2021-05-02 20:39:42,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 193. [2021-05-02 20:39:42,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 131 states have (on average 1.0763358778625953) internal successors, (141), 133 states have internal predecessors, (141), 41 states have call successors, (41), 21 states have call predecessors, (41), 20 states have return successors, (40), 38 states have call predecessors, (40), 40 states have call successors, (40) [2021-05-02 20:39:42,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 222 transitions. [2021-05-02 20:39:42,895 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 222 transitions. Word has length 117 [2021-05-02 20:39:42,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 20:39:42,896 INFO L480 AbstractCegarLoop]: Abstraction has 193 states and 222 transitions. [2021-05-02 20:39:42,896 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 6 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 5 states have call predecessors, (15), 5 states have call successors, (15) [2021-05-02 20:39:42,896 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 222 transitions. [2021-05-02 20:39:42,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-05-02 20:39:42,898 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 20:39:42,898 INFO L523 BasicCegarLoop]: trace histogram [14, 13, 13, 7, 7, 6, 5, 5, 5, 5, 4, 4, 4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 20:39:43,101 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-05-02 20:39:43,101 INFO L428 AbstractCegarLoop]: === Iteration 15 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 20:39:43,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 20:39:43,101 INFO L82 PathProgramCache]: Analyzing trace with hash -402096596, now seen corresponding path program 8 times [2021-05-02 20:39:43,102 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 20:39:43,102 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109503062] [2021-05-02 20:39:43,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 20:39:43,106 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 20:39:43,106 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [617866739] [2021-05-02 20:39:43,107 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 20:39:43,167 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 20:39:43,167 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 20:39:43,168 INFO L263 TraceCheckSpWp]: Trace formula consists of 308 conjuncts, 11 conjunts are in the unsatisfiable core [2021-05-02 20:39:43,169 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 20:39:43,200 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:43,201 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:43,208 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:43,209 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:43,217 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:43,221 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:43,252 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:43,252 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:43,262 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:43,263 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:43,270 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:43,272 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:43,281 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:43,281 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:43,282 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:43,282 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:43,292 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:43,292 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:43,293 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:43,294 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:43,303 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:43,304 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:43,305 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:43,305 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:43,312 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:43,313 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:43,319 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:43,320 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:43,326 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:43,327 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:43,334 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:43,335 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:43,341 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:43,342 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:43,359 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:43,360 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:43,360 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:43,361 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:43,370 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:43,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:43,372 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:43,372 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:43,382 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:43,383 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:43,394 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:43,394 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:43,395 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:43,395 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:43,402 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:43,403 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:43,409 INFO L134 CoverageAnalysis]: Checked inductivity of 452 backedges. 53 proven. 54 refuted. 0 times theorem prover too weak. 345 trivial. 0 not checked. [2021-05-02 20:39:43,409 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 20:39:43,409 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109503062] [2021-05-02 20:39:43,409 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 20:39:43,409 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [617866739] [2021-05-02 20:39:43,409 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [617866739] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 20:39:43,409 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 20:39:43,409 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-05-02 20:39:43,410 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679634182] [2021-05-02 20:39:43,410 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-02 20:39:43,410 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 20:39:43,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-02 20:39:43,411 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-05-02 20:39:43,411 INFO L87 Difference]: Start difference. First operand 193 states and 222 transitions. Second operand has 8 states, 8 states have (on average 4.75) internal successors, (38), 8 states have internal predecessors, (38), 8 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 7 states have call predecessors, (16), 7 states have call successors, (16) [2021-05-02 20:39:43,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 20:39:43,558 INFO L93 Difference]: Finished difference Result 205 states and 238 transitions. [2021-05-02 20:39:43,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-02 20:39:43,559 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.75) internal successors, (38), 8 states have internal predecessors, (38), 8 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 7 states have call predecessors, (16), 7 states have call successors, (16) Word has length 124 [2021-05-02 20:39:43,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 20:39:43,560 INFO L225 Difference]: With dead ends: 205 [2021-05-02 20:39:43,560 INFO L226 Difference]: Without dead ends: 205 [2021-05-02 20:39:43,560 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 79.1ms TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2021-05-02 20:39:43,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2021-05-02 20:39:43,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 190. [2021-05-02 20:39:43,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 129 states have (on average 1.069767441860465) internal successors, (138), 131 states have internal predecessors, (138), 40 states have call successors, (40), 21 states have call predecessors, (40), 20 states have return successors, (39), 37 states have call predecessors, (39), 39 states have call successors, (39) [2021-05-02 20:39:43,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 217 transitions. [2021-05-02 20:39:43,563 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 217 transitions. Word has length 124 [2021-05-02 20:39:43,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 20:39:43,564 INFO L480 AbstractCegarLoop]: Abstraction has 190 states and 217 transitions. [2021-05-02 20:39:43,564 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 4.75) internal successors, (38), 8 states have internal predecessors, (38), 8 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 7 states have call predecessors, (16), 7 states have call successors, (16) [2021-05-02 20:39:43,564 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 217 transitions. [2021-05-02 20:39:43,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2021-05-02 20:39:43,565 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 20:39:43,565 INFO L523 BasicCegarLoop]: trace histogram [16, 15, 15, 7, 7, 6, 6, 6, 6, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 20:39:43,777 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 20:39:43,777 INFO L428 AbstractCegarLoop]: === Iteration 16 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 20:39:43,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 20:39:43,778 INFO L82 PathProgramCache]: Analyzing trace with hash -1556780812, now seen corresponding path program 9 times [2021-05-02 20:39:43,778 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 20:39:43,778 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576844470] [2021-05-02 20:39:43,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 20:39:43,789 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 20:39:43,790 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1755794190] [2021-05-02 20:39:43,790 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 20:39:43,868 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-05-02 20:39:43,868 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 20:39:43,869 INFO L263 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 30 conjunts are in the unsatisfiable core [2021-05-02 20:39:43,871 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 20:39:43,991 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:43,992 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:43,994 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:39:43,995 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:40:54,562 WARN L860 $PredicateComparison]: unable to prove that (exists ((main_~v~0 Int) (main_~r~0 Int)) (= (+ (* main_~v~0 main_~v~0) (* 4 c_main_~A~0) (* 4 main_~r~0) (* 2 c_main_~u~0)) (+ (* c_main_~u~0 c_main_~u~0) (* 2 main_~v~0)))) is different from true [2021-05-02 20:40:54,563 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:40:54,565 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:40:54,566 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:40:54,567 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:40:54,568 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:40:54,569 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:40:54,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:40:54,571 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:40:54,572 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:40:54,573 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:40:54,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:40:54,596 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:40:54,603 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:40:54,604 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:40:54,606 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:40:54,607 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:40:54,608 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:40:54,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:40:54,610 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:40:54,611 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:40:54,612 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:40:54,613 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:40:54,615 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:40:54,616 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:40:54,617 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:40:54,618 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:40:54,619 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:40:54,620 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:40:54,622 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:40:54,628 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:40:54,630 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:40:54,631 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:40:54,632 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:40:54,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:40:54,635 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:40:54,636 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:40:54,637 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:40:54,638 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:40:54,639 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:40:54,640 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:40:54,641 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:40:54,642 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:40:54,644 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:40:54,645 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:40:54,646 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:40:54,647 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:40:54,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:40:54,654 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:40:54,655 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:40:54,657 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:40:54,657 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:40:54,659 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:40:54,661 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:40:54,662 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:40:54,664 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:40:54,665 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:40:56,682 WARN L860 $PredicateComparison]: unable to prove that (exists ((main_~v~0 Int) (v_main_~r~0_59 Int) (v_main_~r~0_58 Int)) (= (+ (* 2 (* c_main_~r~0 v_main_~r~0_58)) (* 4 v_main_~r~0_59) (* main_~v~0 main_~v~0) (* 4 c_main_~A~0) (* 2 c_main_~r~0)) (+ (* 2 main_~v~0) (* c_main_~r~0 c_main_~r~0) (* 2 v_main_~r~0_58) (* v_main_~r~0_58 v_main_~r~0_58)))) is different from true [2021-05-02 20:40:56,684 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:40:56,685 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:40:56,686 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:40:56,687 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:40:56,688 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:40:56,689 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:40:56,691 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:40:56,698 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:40:56,699 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:40:56,701 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:40:56,702 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:40:56,704 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:40:58,720 WARN L205 SmtUtils]: Spent 2.01 s on a formula simplification that was a NOOP. DAG size: 32 [2021-05-02 20:40:58,723 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:40:58,724 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:40:58,726 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:40:58,728 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:40:58,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:41:00,758 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:41:00,760 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:41:00,779 INFO L134 CoverageAnalysis]: Checked inductivity of 585 backedges. 155 proven. 11 refuted. 0 times theorem prover too weak. 412 trivial. 7 not checked. [2021-05-02 20:41:00,779 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 20:41:00,779 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [576844470] [2021-05-02 20:41:00,779 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 20:41:00,779 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1755794190] [2021-05-02 20:41:00,779 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1755794190] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 20:41:00,779 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 20:41:00,779 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2021-05-02 20:41:00,780 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029561651] [2021-05-02 20:41:00,780 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-02 20:41:00,780 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 20:41:00,780 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-02 20:41:00,780 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=42, Unknown=3, NotChecked=26, Total=90 [2021-05-02 20:41:00,780 INFO L87 Difference]: Start difference. First operand 190 states and 217 transitions. Second operand has 10 states, 10 states have (on average 3.4) internal successors, (34), 8 states have internal predecessors, (34), 4 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2021-05-02 20:41:08,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 20:41:08,913 INFO L93 Difference]: Finished difference Result 192 states and 218 transitions. [2021-05-02 20:41:08,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-02 20:41:08,914 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.4) internal successors, (34), 8 states have internal predecessors, (34), 4 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 138 [2021-05-02 20:41:08,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 20:41:08,914 INFO L225 Difference]: With dead ends: 192 [2021-05-02 20:41:08,914 INFO L226 Difference]: Without dead ends: 0 [2021-05-02 20:41:08,915 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 129 SyntacticMatches, 3 SemanticMatches, 10 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 76676.2ms TimeCoverageRelationStatistics Valid=30, Invalid=65, Unknown=3, NotChecked=34, Total=132 [2021-05-02 20:41:08,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-05-02 20:41:08,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-05-02 20:41:08,915 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) [2021-05-02 20:41:08,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-05-02 20:41:08,915 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 138 [2021-05-02 20:41:08,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 20:41:08,915 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-05-02 20:41:08,915 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 3.4) internal successors, (34), 8 states have internal predecessors, (34), 4 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2021-05-02 20:41:08,915 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-05-02 20:41:08,915 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-05-02 20:41:09,116 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-05-02 20:41:09,119 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.05 08:41:09 BasicIcfg [2021-05-02 20:41:09,119 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-05-02 20:41:09,119 INFO L168 Benchmark]: Toolchain (without parser) took 311669.18 ms. Allocated memory was 177.2 MB in the beginning and 225.4 MB in the end (delta: 48.2 MB). Free memory was 141.4 MB in the beginning and 130.3 MB in the end (delta: 11.0 MB). Peak memory consumption was 61.0 MB. Max. memory is 8.0 GB. [2021-05-02 20:41:09,119 INFO L168 Benchmark]: CDTParser took 0.09 ms. Allocated memory is still 177.2 MB. Free memory is still 158.3 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-05-02 20:41:09,119 INFO L168 Benchmark]: CACSL2BoogieTranslator took 283.95 ms. Allocated memory is still 177.2 MB. Free memory was 141.2 MB in the beginning and 159.2 MB in the end (delta: -18.1 MB). Peak memory consumption was 16.6 MB. Max. memory is 8.0 GB. [2021-05-02 20:41:09,119 INFO L168 Benchmark]: Boogie Preprocessor took 32.68 ms. Allocated memory is still 177.2 MB. Free memory was 159.2 MB in the beginning and 158.0 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-05-02 20:41:09,119 INFO L168 Benchmark]: RCFGBuilder took 245.72 ms. Allocated memory is still 177.2 MB. Free memory was 158.0 MB in the beginning and 141.8 MB in the end (delta: 16.2 MB). Peak memory consumption was 16.8 MB. Max. memory is 8.0 GB. [2021-05-02 20:41:09,120 INFO L168 Benchmark]: IcfgTransformer took 13.77 ms. Allocated memory is still 177.2 MB. Free memory was 141.8 MB in the beginning and 140.4 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-05-02 20:41:09,120 INFO L168 Benchmark]: TraceAbstraction took 311082.76 ms. Allocated memory was 177.2 MB in the beginning and 225.4 MB in the end (delta: 48.2 MB). Free memory was 140.2 MB in the beginning and 130.3 MB in the end (delta: 9.9 MB). Peak memory consumption was 60.0 MB. Max. memory is 8.0 GB. [2021-05-02 20:41:09,120 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09 ms. Allocated memory is still 177.2 MB. Free memory is still 158.3 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 283.95 ms. Allocated memory is still 177.2 MB. Free memory was 141.2 MB in the beginning and 159.2 MB in the end (delta: -18.1 MB). Peak memory consumption was 16.6 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 32.68 ms. Allocated memory is still 177.2 MB. Free memory was 159.2 MB in the beginning and 158.0 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 245.72 ms. Allocated memory is still 177.2 MB. Free memory was 158.0 MB in the beginning and 141.8 MB in the end (delta: 16.2 MB). Peak memory consumption was 16.8 MB. Max. memory is 8.0 GB. * IcfgTransformer took 13.77 ms. Allocated memory is still 177.2 MB. Free memory was 141.8 MB in the beginning and 140.4 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 311082.76 ms. Allocated memory was 177.2 MB in the beginning and 225.4 MB in the end (delta: 48.2 MB). Free memory was 140.2 MB in the beginning and 130.3 MB in the end (delta: 9.9 MB). Peak memory consumption was 60.0 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 14]: 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 5 procedures, 37 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 311050.7ms, OverallIterations: 16, TraceHistogramMax: 16, EmptinessCheckTime: 38.0ms, AutomataDifference: 187987.9ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 5.5ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 711 SDtfs, 507 SDslu, 2723 SDs, 0 SdLazy, 2224 SolverSat, 309 SolverUnsat, 61 SolverUnknown, 0 SolverNotchecked, 150953.8ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1347 GetRequests, 1167 SyntacticMatches, 4 SemanticMatches, 176 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 262 ImplicationChecksByTransitivity, 150990.2ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=198occurred in iteration=8, InterpolantAutomatonStates: 157, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 154.8ms AutomataMinimizationTime, 16 MinimizatonAttempts, 173 StatesRemovedByMinimization, 12 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 133.5ms SsaConstructionTime, 625.3ms SatisfiabilityAnalysisTime, 118360.7ms InterpolantComputationTime, 1311 NumberOfCodeBlocks, 1144 NumberOfCodeBlocksAsserted, 35 NumberOfCheckSat, 1295 ConstructedInterpolants, 141 QuantifiedInterpolants, 6661 SizeOfPredicates, 56 NumberOfNonLiveVariables, 3126 ConjunctsInSsa, 319 ConjunctsInUnsatCore, 16 InterpolantComputations, 1 PerfectInterpolantSequences, 2934/3245 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...